21603785

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{571}}^1$

素因数の和:653

約数の個数: 32

約数和(自身を含む): 31629312

約数和(自身を除く): 10025527

約数列:

[1, 5, 7, 23, 35, 47, 115, 161, 235, 329, 571, 805, 1081, 1645, 2855, 3997, 5405, 7567, 13133, 19985, 26837, 37835, 65665, 91931, 134185, 187859, 459655, 617251, 939295, 3086255, 4320757, 21603785]

約数ペア:

[(1, 21603785), (5, 4320757), (7, 3086255), (23, 939295), (35, 617251), (47, 459655), (115, 187859), (161, 134185), (235, 91931), (329, 65665), (571, 37835), (805, 26837), (1081, 19985), (1645, 13133), (2855, 7567), (3997, 5405)]