20664501

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{151}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 33962880

約数和(自身を除く): 13298379

約数列:

[1, 3, 11, 13, 29, 33, 39, 87, 121, 143, 151, 319, 363, 377, 429, 453, 957, 1131, 1573, 1661, 1963, 3509, 4147, 4379, 4719, 4983, 5889, 10527, 12441, 13137, 18271, 21593, 45617, 48169, 54813, 56927, 64779, 136851, 144507, 170781, 237523, 529859, 626197, 712569, 1589577, 1878591, 6888167, 20664501]

約数ペア:

[(1, 20664501), (3, 6888167), (11, 1878591), (13, 1589577), (29, 712569), (33, 626197), (39, 529859), (87, 237523), (121, 170781), (143, 144507), (151, 136851), (319, 64779), (363, 56927), (377, 54813), (429, 48169), (453, 45617), (957, 21593), (1131, 18271), (1573, 13137), (1661, 12441), (1963, 10527), (3509, 5889), (4147, 4983), (4379, 4719)]