20541689600

素因数分解:

$2^8\times 5^2\times {\mathrm{37}}^1\times {\mathrm{223}}^1\times {\mathrm{389}}^1$

素因数の和:675

約数の個数: 216

約数和(自身を含む): 52587050880

約数和(自身を除く): 32045361280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 37, 40, 50, 64, 74, 80, 100, 128, 148, 160, 185, 200, 223, 256, 296, 320, 370, 389, 400, 446, 592, 640, 740, 778, 800, 892, 925, 1115, 1184, 1280, 1480, 1556, 1600, 1784, 1850, 1945, 2230, 2368, 2960, 3112, 3200, 3568, 3700, 3890, 4460, 4736, 5575, 5920, 6224, 6400, 7136, 7400, 7780, 8251, 8920, 9472, 9725, 11150, 11840, 12448, 14272, 14393, 14800, 15560, 16502, 17840, 19450, 22300, 23680, 24896, 28544, 28786, 29600, 31120, 33004, 35680, 38900, 41255, 44600, 47360, 49792, 57088, 57572, 59200, 62240, 66008, 71360, 71965, 77800, 82510, 86747, 89200, 99584, 115144, 118400, 124480, 132016, 142720, 143930, 155600, 165020, 173494, 178400, 206275, 230288, 236800, 248960, 264032, 285440, 287860, 311200, 330040, 346988, 356800, 359825, 412550, 433735, 460576, 497920, 528064, 575720, 622400, 660080, 693976, 713600, 719650, 825100, 867470, 921152, 1056128, 1151440, 1244800, 1320160, 1387952, 1427200, 1439300, 1650200, 1734940, 1842304, 2112256, 2168675, 2302880, 2489600, 2640320, 2775904, 2878600, 3209639, 3300400, 3469880, 3684608, 4337350, 4605760, 5280640, 5551808, 5757200, 6419278, 6600800, 6939760, 8674700, 9211520, 10561280, 11103616, 11514400, 12838556, 13201600, 13879520, 16048195, 17349400, 18423040, 22207232, 23028800, 25677112, 26403200, 27759040, 32096390, 34698800, 46057600, 51354224, 52806400, 55518080, 64192780, 69397600, 80240975, 92115200, 102708448, 111036160, 128385560, 138795200, 160481950, 205416896, 256771120, 277590400, 320963900, 410833792, 513542240, 555180800, 641927800, 821667584, 1027084480, 1283855600, 2054168960, 2567711200, 4108337920, 5135422400, 10270844800, 20541689600]

約数ペア:

[(1, 20541689600), (2, 10270844800), (4, 5135422400), (5, 4108337920), (8, 2567711200), (10, 2054168960), (16, 1283855600), (20, 1027084480), (25, 821667584), (32, 641927800), (37, 555180800), (40, 513542240), (50, 410833792), (64, 320963900), (74, 277590400), (80, 256771120), (100, 205416896), (128, 160481950), (148, 138795200), (160, 128385560), (185, 111036160), (200, 102708448), (223, 92115200), (256, 80240975), (296, 69397600), (320, 64192780), (370, 55518080), (389, 52806400), (400, 51354224), (446, 46057600), (592, 34698800), (640, 32096390), (740, 27759040), (778, 26403200), (800, 25677112), (892, 23028800), (925, 22207232), (1115, 18423040), (1184, 17349400), (1280, 16048195), (1480, 13879520), (1556, 13201600), (1600, 12838556), (1784, 11514400), (1850, 11103616), (1945, 10561280), (2230, 9211520), (2368, 8674700), (2960, 6939760), (3112, 6600800), (3200, 6419278), (3568, 5757200), (3700, 5551808), (3890, 5280640), (4460, 4605760), (4736, 4337350), (5575, 3684608), (5920, 3469880), (6224, 3300400), (6400, 3209639), (7136, 2878600), (7400, 2775904), (7780, 2640320), (8251, 2489600), (8920, 2302880), (9472, 2168675), (9725, 2112256), (11150, 1842304), (11840, 1734940), (12448, 1650200), (14272, 1439300), (14393, 1427200), (14800, 1387952), (15560, 1320160), (16502, 1244800), (17840, 1151440), (19450, 1056128), (22300, 921152), (23680, 867470), (24896, 825100), (28544, 719650), (28786, 713600), (29600, 693976), (31120, 660080), (33004, 622400), (35680, 575720), (38900, 528064), (41255, 497920), (44600, 460576), (47360, 433735), (49792, 412550), (57088, 359825), (57572, 356800), (59200, 346988), (62240, 330040), (66008, 311200), (71360, 287860), (71965, 285440), (77800, 264032), (82510, 248960), (86747, 236800), (89200, 230288), (99584, 206275), (115144, 178400), (118400, 173494), (124480, 165020), (132016, 155600), (142720, 143930)]