66346640

素因数分解:

$2^4\times 5^1\times {\mathrm{397}}^1\times {\mathrm{2089}}^1$

素因数の和:2499

約数の個数: 40

約数和(自身を含む): 154718520

約数和(自身を除く): 88371880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 397, 794, 1588, 1985, 2089, 3176, 3970, 4178, 6352, 7940, 8356, 10445, 15880, 16712, 20890, 31760, 33424, 41780, 83560, 167120, 829333, 1658666, 3317332, 4146665, 6634664, 8293330, 13269328, 16586660, 33173320, 66346640]

約数ペア:

[(1, 66346640), (2, 33173320), (4, 16586660), (5, 13269328), (8, 8293330), (10, 6634664), (16, 4146665), (20, 3317332), (40, 1658666), (80, 829333), (397, 167120), (794, 83560), (1588, 41780), (1985, 33424), (2089, 31760), (3176, 20890), (3970, 16712), (4178, 15880), (6352, 10445), (7940, 8356)]