81905760

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{2473}}^1$

素因数の和:2517

約数の個数: 144

約数和(自身を含む): 291773664

約数和(自身を除く): 209867904

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 30, 32, 36, 40, 45, 46, 48, 60, 69, 72, 80, 90, 92, 96, 115, 120, 138, 144, 160, 180, 184, 207, 230, 240, 276, 288, 345, 360, 368, 414, 460, 480, 552, 690, 720, 736, 828, 920, 1035, 1104, 1380, 1440, 1656, 1840, 2070, 2208, 2473, 2760, 3312, 3680, 4140, 4946, 5520, 6624, 7419, 8280, 9892, 11040, 12365, 14838, 16560, 19784, 22257, 24730, 29676, 33120, 37095, 39568, 44514, 49460, 56879, 59352, 74190, 79136, 89028, 98920, 111285, 113758, 118704, 148380, 170637, 178056, 197840, 222570, 227516, 237408, 284395, 296760, 341274, 356112, 395680, 445140, 455032, 511911, 568790, 593520, 682548, 712224, 853185, 890280, 910064, 1023822, 1137580, 1187040, 1365096, 1706370, 1780560, 1820128, 2047644, 2275160, 2559555, 2730192, 3412740, 3561120, 4095288, 4550320, 5119110, 5460384, 6825480, 8190576, 9100640, 10238220, 13650960, 16381152, 20476440, 27301920, 40952880, 81905760]

約数ペア:

[(1, 81905760), (2, 40952880), (3, 27301920), (4, 20476440), (5, 16381152), (6, 13650960), (8, 10238220), (9, 9100640), (10, 8190576), (12, 6825480), (15, 5460384), (16, 5119110), (18, 4550320), (20, 4095288), (23, 3561120), (24, 3412740), (30, 2730192), (32, 2559555), (36, 2275160), (40, 2047644), (45, 1820128), (46, 1780560), (48, 1706370), (60, 1365096), (69, 1187040), (72, 1137580), (80, 1023822), (90, 910064), (92, 890280), (96, 853185), (115, 712224), (120, 682548), (138, 593520), (144, 568790), (160, 511911), (180, 455032), (184, 445140), (207, 395680), (230, 356112), (240, 341274), (276, 296760), (288, 284395), (345, 237408), (360, 227516), (368, 222570), (414, 197840), (460, 178056), (480, 170637), (552, 148380), (690, 118704), (720, 113758), (736, 111285), (828, 98920), (920, 89028), (1035, 79136), (1104, 74190), (1380, 59352), (1440, 56879), (1656, 49460), (1840, 44514), (2070, 39568), (2208, 37095), (2473, 33120), (2760, 29676), (3312, 24730), (3680, 22257), (4140, 19784), (4946, 16560), (5520, 14838), (6624, 12365), (7419, 11040), (8280, 9892)]