81272800

素因数分解:

$2^5\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{631}}^1$

素因数の和:681

約数の個数: 144

約数和(自身を含む): 236984832

約数和(自身を除く): 155712032

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 25, 28, 32, 35, 40, 46, 50, 56, 70, 80, 92, 100, 112, 115, 140, 160, 161, 175, 184, 200, 224, 230, 280, 322, 350, 368, 400, 460, 560, 575, 631, 644, 700, 736, 800, 805, 920, 1120, 1150, 1262, 1288, 1400, 1610, 1840, 2300, 2524, 2576, 2800, 3155, 3220, 3680, 4025, 4417, 4600, 5048, 5152, 5600, 6310, 6440, 8050, 8834, 9200, 10096, 12620, 12880, 14513, 15775, 16100, 17668, 18400, 20192, 22085, 25240, 25760, 29026, 31550, 32200, 35336, 44170, 50480, 58052, 63100, 64400, 70672, 72565, 88340, 100960, 101591, 110425, 116104, 126200, 128800, 141344, 145130, 176680, 203182, 220850, 232208, 252400, 290260, 353360, 362825, 406364, 441700, 464416, 504800, 507955, 580520, 706720, 725650, 812728, 883400, 1015910, 1161040, 1451300, 1625456, 1766800, 2031820, 2322080, 2539775, 2902600, 3250912, 3533600, 4063640, 5079550, 5805200, 8127280, 10159100, 11610400, 16254560, 20318200, 40636400, 81272800]

約数ペア:

[(1, 81272800), (2, 40636400), (4, 20318200), (5, 16254560), (7, 11610400), (8, 10159100), (10, 8127280), (14, 5805200), (16, 5079550), (20, 4063640), (23, 3533600), (25, 3250912), (28, 2902600), (32, 2539775), (35, 2322080), (40, 2031820), (46, 1766800), (50, 1625456), (56, 1451300), (70, 1161040), (80, 1015910), (92, 883400), (100, 812728), (112, 725650), (115, 706720), (140, 580520), (160, 507955), (161, 504800), (175, 464416), (184, 441700), (200, 406364), (224, 362825), (230, 353360), (280, 290260), (322, 252400), (350, 232208), (368, 220850), (400, 203182), (460, 176680), (560, 145130), (575, 141344), (631, 128800), (644, 126200), (700, 116104), (736, 110425), (800, 101591), (805, 100960), (920, 88340), (1120, 72565), (1150, 70672), (1262, 64400), (1288, 63100), (1400, 58052), (1610, 50480), (1840, 44170), (2300, 35336), (2524, 32200), (2576, 31550), (2800, 29026), (3155, 25760), (3220, 25240), (3680, 22085), (4025, 20192), (4417, 18400), (4600, 17668), (5048, 16100), (5152, 15775), (5600, 14513), (6310, 12880), (6440, 12620), (8050, 10096), (8834, 9200)]