81032440

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{9601}}^1$

素因数の和:9823

約数の個数: 32

約数和(自身を含む): 183206160

約数和(自身を除く): 102173720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 4220, 8440, 9601, 19202, 38404, 48005, 76808, 96010, 192020, 384040, 2025811, 4051622, 8103244, 10129055, 16206488, 20258110, 40516220, 81032440]

約数ペア:

[(1, 81032440), (2, 40516220), (4, 20258110), (5, 16206488), (8, 10129055), (10, 8103244), (20, 4051622), (40, 2025811), (211, 384040), (422, 192020), (844, 96010), (1055, 76808), (1688, 48005), (2110, 38404), (4220, 19202), (8440, 9601)]