20459725

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{97}}^1$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 30623040

約数和(自身を除く): 10163315

約数列:

[1, 5, 11, 13, 25, 55, 59, 65, 97, 143, 275, 295, 325, 485, 649, 715, 767, 1067, 1261, 1475, 2425, 3245, 3575, 3835, 5335, 5723, 6305, 8437, 13871, 16225, 19175, 26675, 28615, 31525, 42185, 62953, 69355, 74399, 143075, 210925, 314765, 346775, 371995, 818389, 1573825, 1859975, 4091945, 20459725]

約数ペア:

[(1, 20459725), (5, 4091945), (11, 1859975), (13, 1573825), (25, 818389), (55, 371995), (59, 346775), (65, 314765), (97, 210925), (143, 143075), (275, 74399), (295, 69355), (325, 62953), (485, 42185), (649, 31525), (715, 28615), (767, 26675), (1067, 19175), (1261, 16225), (1475, 13871), (2425, 8437), (3245, 6305), (3575, 5723), (3835, 5335)]