81379370

素因数分解:

$2^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{191}}^1\times {\mathrm{311}}^1$

素因数の和:646

約数の個数: 32

約数和(自身を含む): 148801536

約数和(自身を除く): 67422166

約数列:

[1, 2, 5, 10, 137, 191, 274, 311, 382, 622, 685, 955, 1370, 1555, 1910, 3110, 26167, 42607, 52334, 59401, 85214, 118802, 130835, 213035, 261670, 297005, 426070, 594010, 8137937, 16275874, 40689685, 81379370]

約数ペア:

[(1, 81379370), (2, 40689685), (5, 16275874), (10, 8137937), (137, 594010), (191, 426070), (274, 297005), (311, 261670), (382, 213035), (622, 130835), (685, 118802), (955, 85214), (1370, 59401), (1555, 52334), (1910, 42607), (3110, 26167)]