64688668

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{20707}}^1$

素因数の和:20793

約数の個数: 24

約数和(自身を含む): 125241984

約数和(自身を除く): 60553316

約数列:

[1, 2, 4, 11, 22, 44, 71, 142, 284, 781, 1562, 3124, 20707, 41414, 82828, 227777, 455554, 911108, 1470197, 2940394, 5880788, 16172167, 32344334, 64688668]

約数ペア:

[(1, 64688668), (2, 32344334), (4, 16172167), (11, 5880788), (22, 2940394), (44, 1470197), (71, 911108), (142, 455554), (284, 227777), (781, 82828), (1562, 41414), (3124, 20707)]