20648250

素因数分解:

$2^1\times 3^3\times 5^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:75

約数の個数: 256

約数和(自身を含む): 71884800

約数和(自身を除く): 51236550

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 19, 21, 23, 25, 27, 30, 35, 38, 42, 45, 46, 50, 54, 57, 63, 69, 70, 75, 90, 95, 105, 114, 115, 125, 126, 133, 135, 138, 150, 161, 171, 175, 189, 190, 207, 210, 225, 230, 250, 266, 270, 285, 315, 322, 342, 345, 350, 375, 378, 399, 414, 437, 450, 475, 483, 513, 525, 570, 575, 621, 630, 665, 675, 690, 750, 798, 805, 855, 874, 875, 945, 950, 966, 1026, 1035, 1050, 1125, 1150, 1197, 1242, 1311, 1330, 1350, 1425, 1449, 1575, 1610, 1710, 1725, 1750, 1890, 1995, 2070, 2185, 2250, 2375, 2394, 2415, 2565, 2622, 2625, 2850, 2875, 2898, 3059, 3105, 3150, 3325, 3375, 3450, 3591, 3933, 3990, 4025, 4275, 4347, 4370, 4725, 4750, 4830, 5130, 5175, 5250, 5750, 5985, 6118, 6210, 6555, 6650, 6750, 7125, 7182, 7245, 7866, 7875, 8050, 8550, 8625, 8694, 9177, 9450, 9975, 10350, 10925, 11799, 11970, 12075, 12825, 13110, 14250, 14490, 15295, 15525, 15750, 16625, 17250, 17955, 18354, 19665, 19950, 20125, 21375, 21735, 21850, 23598, 23625, 24150, 25650, 25875, 27531, 29925, 30590, 31050, 32775, 33250, 35910, 36225, 39330, 40250, 42750, 43470, 45885, 47250, 49875, 51750, 54625, 55062, 58995, 59850, 60375, 64125, 65550, 72450, 76475, 77625, 82593, 89775, 91770, 98325, 99750, 108675, 109250, 117990, 120750, 128250, 137655, 149625, 152950, 155250, 163875, 165186, 179550, 181125, 196650, 217350, 229425, 275310, 294975, 299250, 327750, 362250, 382375, 412965, 448875, 458850, 491625, 543375, 589950, 688275, 764750, 825930, 897750, 983250, 1086750, 1147125, 1376550, 1474875, 2064825, 2294250, 2949750, 3441375, 4129650, 6882750, 10324125, 20648250]

約数ペア:

[(1, 20648250), (2, 10324125), (3, 6882750), (5, 4129650), (6, 3441375), (7, 2949750), (9, 2294250), (10, 2064825), (14, 1474875), (15, 1376550), (18, 1147125), (19, 1086750), (21, 983250), (23, 897750), (25, 825930), (27, 764750), (30, 688275), (35, 589950), (38, 543375), (42, 491625), (45, 458850), (46, 448875), (50, 412965), (54, 382375), (57, 362250), (63, 327750), (69, 299250), (70, 294975), (75, 275310), (90, 229425), (95, 217350), (105, 196650), (114, 181125), (115, 179550), (125, 165186), (126, 163875), (133, 155250), (135, 152950), (138, 149625), (150, 137655), (161, 128250), (171, 120750), (175, 117990), (189, 109250), (190, 108675), (207, 99750), (210, 98325), (225, 91770), (230, 89775), (250, 82593), (266, 77625), (270, 76475), (285, 72450), (315, 65550), (322, 64125), (342, 60375), (345, 59850), (350, 58995), (375, 55062), (378, 54625), (399, 51750), (414, 49875), (437, 47250), (450, 45885), (475, 43470), (483, 42750), (513, 40250), (525, 39330), (570, 36225), (575, 35910), (621, 33250), (630, 32775), (665, 31050), (675, 30590), (690, 29925), (750, 27531), (798, 25875), (805, 25650), (855, 24150), (874, 23625), (875, 23598), (945, 21850), (950, 21735), (966, 21375), (1026, 20125), (1035, 19950), (1050, 19665), (1125, 18354), (1150, 17955), (1197, 17250), (1242, 16625), (1311, 15750), (1330, 15525), (1350, 15295), (1425, 14490), (1449, 14250), (1575, 13110), (1610, 12825), (1710, 12075), (1725, 11970), (1750, 11799), (1890, 10925), (1995, 10350), (2070, 9975), (2185, 9450), (2250, 9177), (2375, 8694), (2394, 8625), (2415, 8550), (2565, 8050), (2622, 7875), (2625, 7866), (2850, 7245), (2875, 7182), (2898, 7125), (3059, 6750), (3105, 6650), (3150, 6555), (3325, 6210), (3375, 6118), (3450, 5985), (3591, 5750), (3933, 5250), (3990, 5175), (4025, 5130), (4275, 4830), (4347, 4750), (4370, 4725)]