81417830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{8821}}^1$

素因数の和:8912

約数の個数: 32

約数和(自身を含む): 160066368

約数和(自身を除く): 78648538

約数列:

[1, 2, 5, 10, 13, 26, 65, 71, 130, 142, 355, 710, 923, 1846, 4615, 8821, 9230, 17642, 44105, 88210, 114673, 229346, 573365, 626291, 1146730, 1252582, 3131455, 6262910, 8141783, 16283566, 40708915, 81417830]

約数ペア:

[(1, 81417830), (2, 40708915), (5, 16283566), (10, 8141783), (13, 6262910), (26, 3131455), (65, 1252582), (71, 1146730), (130, 626291), (142, 573365), (355, 229346), (710, 114673), (923, 88210), (1846, 44105), (4615, 17642), (8821, 9230)]