90189880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2887}}^1$

素因数の和:2980

約数の個数: 64

約数和(自身を含む): 224570880

約数和(自身を除く): 134381000

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 71, 88, 110, 142, 220, 284, 355, 440, 568, 710, 781, 1420, 1562, 2840, 2887, 3124, 3905, 5774, 6248, 7810, 11548, 14435, 15620, 23096, 28870, 31240, 31757, 57740, 63514, 115480, 127028, 158785, 204977, 254056, 317570, 409954, 635140, 819908, 1024885, 1270280, 1639816, 2049770, 2254747, 4099540, 4509494, 8199080, 9018988, 11273735, 18037976, 22547470, 45094940, 90189880]

約数ペア:

[(1, 90189880), (2, 45094940), (4, 22547470), (5, 18037976), (8, 11273735), (10, 9018988), (11, 8199080), (20, 4509494), (22, 4099540), (40, 2254747), (44, 2049770), (55, 1639816), (71, 1270280), (88, 1024885), (110, 819908), (142, 635140), (220, 409954), (284, 317570), (355, 254056), (440, 204977), (568, 158785), (710, 127028), (781, 115480), (1420, 63514), (1562, 57740), (2840, 31757), (2887, 31240), (3124, 28870), (3905, 23096), (5774, 15620), (6248, 14435), (7810, 11548)]