81575240

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{49741}}^1$

素因数の和:49793

約数の個数: 32

約数和(自身を含む): 188024760

約数和(自身を除く): 106449520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 49741, 99482, 198964, 248705, 397928, 497410, 994820, 1989640, 2039381, 4078762, 8157524, 10196905, 16315048, 20393810, 40787620, 81575240]

約数ペア:

[(1, 81575240), (2, 40787620), (4, 20393810), (5, 16315048), (8, 10196905), (10, 8157524), (20, 4078762), (40, 2039381), (41, 1989640), (82, 994820), (164, 497410), (205, 397928), (328, 248705), (410, 198964), (820, 99482), (1640, 49741)]