21203271

素因数分解:

$3^2\times {\mathrm{89}}^1\times {\mathrm{103}}^1\times {\mathrm{257}}^1$

素因数の和:455

約数の個数: 24

約数和(自身を含む): 31393440

約数和(自身を除く): 10190169

約数列:

[1, 3, 9, 89, 103, 257, 267, 309, 771, 801, 927, 2313, 9167, 22873, 26471, 27501, 68619, 79413, 82503, 205857, 238239, 2355919, 7067757, 21203271]

約数ペア:

[(1, 21203271), (3, 7067757), (9, 2355919), (89, 238239), (103, 205857), (257, 82503), (267, 79413), (309, 68619), (771, 27501), (801, 26471), (927, 22873), (2313, 9167)]