64521819

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{491}}^1$

素因数の和:688

約数の個数: 32

約数和(自身を含む): 99502080

約数和(自身を除く): 34980261

約数列:

[1, 3, 9, 27, 31, 93, 157, 279, 471, 491, 837, 1413, 1473, 4239, 4419, 4867, 13257, 14601, 15221, 43803, 45663, 77087, 131409, 136989, 231261, 410967, 693783, 2081349, 2389697, 7169091, 21507273, 64521819]

約数ペア:

[(1, 64521819), (3, 21507273), (9, 7169091), (27, 2389697), (31, 2081349), (93, 693783), (157, 410967), (279, 231261), (471, 136989), (491, 131409), (837, 77087), (1413, 45663), (1473, 43803), (4239, 15221), (4419, 14601), (4867, 13257)]