64215915

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{1621}}^1$

素因数の和:1787

約数の個数: 32

約数和(自身を含む): 108998400

約数和(自身を除く): 44782485

約数列:

[1, 3, 5, 15, 19, 57, 95, 139, 285, 417, 695, 1621, 2085, 2641, 4863, 7923, 8105, 13205, 24315, 30799, 39615, 92397, 153995, 225319, 461985, 675957, 1126595, 3379785, 4281061, 12843183, 21405305, 64215915]

約数ペア:

[(1, 64215915), (3, 21405305), (5, 12843183), (15, 4281061), (19, 3379785), (57, 1126595), (95, 675957), (139, 461985), (285, 225319), (417, 153995), (695, 92397), (1621, 39615), (2085, 30799), (2641, 24315), (4863, 13205), (7923, 8105)]