20784738

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{6197}}^1$

素因数の和:6258

約数の個数: 32

約数和(自身を含む): 45815616

約数和(自身を除く): 25030878

約数列:

[1, 2, 3, 6, 13, 26, 39, 43, 78, 86, 129, 258, 559, 1118, 1677, 3354, 6197, 12394, 18591, 37182, 80561, 161122, 241683, 266471, 483366, 532942, 799413, 1598826, 3464123, 6928246, 10392369, 20784738]

約数ペア:

[(1, 20784738), (2, 10392369), (3, 6928246), (6, 3464123), (13, 1598826), (26, 799413), (39, 532942), (43, 483366), (78, 266471), (86, 241683), (129, 161122), (258, 80561), (559, 37182), (1118, 18591), (1677, 12394), (3354, 6197)]