18788480

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{947}}^1$

素因数の和:997

約数の個数: 64

約数和(自身を含む): 46414080

約数和(自身を除く): 27625600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 947, 992, 1240, 1894, 1984, 2480, 3788, 3968, 4735, 4960, 7576, 9470, 9920, 15152, 18940, 19840, 29357, 30304, 37880, 58714, 60608, 75760, 117428, 121216, 146785, 151520, 234856, 293570, 303040, 469712, 587140, 606080, 939424, 1174280, 1878848, 2348560, 3757696, 4697120, 9394240, 18788480]

約数ペア:

[(1, 18788480), (2, 9394240), (4, 4697120), (5, 3757696), (8, 2348560), (10, 1878848), (16, 1174280), (20, 939424), (31, 606080), (32, 587140), (40, 469712), (62, 303040), (64, 293570), (80, 234856), (124, 151520), (128, 146785), (155, 121216), (160, 117428), (248, 75760), (310, 60608), (320, 58714), (496, 37880), (620, 30304), (640, 29357), (947, 19840), (992, 18940), (1240, 15152), (1894, 9920), (1984, 9470), (2480, 7576), (3788, 4960), (3968, 4735)]