21407529

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{359}}^1$

素因数の和:525

約数の個数: 32

約数和(自身を含む): 33868800

約数和(自身を除く): 12461271

約数列:

[1, 3, 11, 13, 33, 39, 139, 143, 359, 417, 429, 1077, 1529, 1807, 3949, 4587, 4667, 5421, 11847, 14001, 19877, 49901, 51337, 59631, 149703, 154011, 548911, 648713, 1646733, 1946139, 7135843, 21407529]

約数ペア:

[(1, 21407529), (3, 7135843), (11, 1946139), (13, 1646733), (33, 648713), (39, 548911), (139, 154011), (143, 149703), (359, 59631), (417, 51337), (429, 49901), (1077, 19877), (1529, 14001), (1807, 11847), (3949, 5421), (4587, 4667)]