25390480

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{7741}}^1$

素因数の和:7795

約数の個数: 40

約数和(自身を含む): 60480504

約数和(自身を除く): 35090024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 7741, 15482, 30964, 38705, 61928, 77410, 123856, 154820, 309640, 317381, 619280, 634762, 1269524, 1586905, 2539048, 3173810, 5078096, 6347620, 12695240, 25390480]

約数ペア:

[(1, 25390480), (2, 12695240), (4, 6347620), (5, 5078096), (8, 3173810), (10, 2539048), (16, 1586905), (20, 1269524), (40, 634762), (41, 619280), (80, 317381), (82, 309640), (164, 154820), (205, 123856), (328, 77410), (410, 61928), (656, 38705), (820, 30964), (1640, 15482), (3280, 7741)]