20656875

素因数分解:

$3^1\times 5^4\times {\mathrm{23}}^1\times {\mathrm{479}}^1$

素因数の和:525

約数の個数: 40

約数和(自身を含む): 35988480

約数和(自身を除く): 15331605

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 115, 125, 345, 375, 479, 575, 625, 1437, 1725, 1875, 2395, 2875, 7185, 8625, 11017, 11975, 14375, 33051, 35925, 43125, 55085, 59875, 165255, 179625, 275425, 299375, 826275, 898125, 1377125, 4131375, 6885625, 20656875]

約数ペア:

[(1, 20656875), (3, 6885625), (5, 4131375), (15, 1377125), (23, 898125), (25, 826275), (69, 299375), (75, 275425), (115, 179625), (125, 165255), (345, 59875), (375, 55085), (479, 43125), (575, 35925), (625, 33051), (1437, 14375), (1725, 11975), (1875, 11017), (2395, 8625), (2875, 7185)]