90351760

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{15907}}^1$

素因数の和:15991

約数の個数: 40

約数和(自身を含む): 213039936

約数和(自身を除く): 122688176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 15907, 31814, 63628, 79535, 127256, 159070, 254512, 318140, 636280, 1129397, 1272560, 2258794, 4517588, 5646985, 9035176, 11293970, 18070352, 22587940, 45175880, 90351760]

約数ペア:

[(1, 90351760), (2, 45175880), (4, 22587940), (5, 18070352), (8, 11293970), (10, 9035176), (16, 5646985), (20, 4517588), (40, 2258794), (71, 1272560), (80, 1129397), (142, 636280), (284, 318140), (355, 254512), (568, 159070), (710, 127256), (1136, 79535), (1420, 63628), (2840, 31814), (5680, 15907)]