21122625

素因数分解:

$3^1\times 5^3\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:151

約数の個数: 64

約数和(自身を含む): 38338560

約数和(自身を除く): 17215935

約数列:

[1, 3, 5, 15, 23, 25, 31, 69, 75, 79, 93, 115, 125, 155, 237, 345, 375, 395, 465, 575, 713, 775, 1185, 1725, 1817, 1975, 2139, 2325, 2449, 2875, 3565, 3875, 5451, 5925, 7347, 8625, 9085, 9875, 10695, 11625, 12245, 17825, 27255, 29625, 36735, 45425, 53475, 56327, 61225, 89125, 136275, 168981, 183675, 227125, 267375, 281635, 306125, 681375, 844905, 918375, 1408175, 4224525, 7040875, 21122625]

約数ペア:

[(1, 21122625), (3, 7040875), (5, 4224525), (15, 1408175), (23, 918375), (25, 844905), (31, 681375), (69, 306125), (75, 281635), (79, 267375), (93, 227125), (115, 183675), (125, 168981), (155, 136275), (237, 89125), (345, 61225), (375, 56327), (395, 53475), (465, 45425), (575, 36735), (713, 29625), (775, 27255), (1185, 17825), (1725, 12245), (1817, 11625), (1975, 10695), (2139, 9875), (2325, 9085), (2449, 8625), (2875, 7347), (3565, 5925), (3875, 5451)]