21386493

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{1237}}^1$

素因数の和:1373

約数の個数: 24

約数和(自身を含む): 33024888

約数和(自身を除く): 11638395

約数列:

[1, 3, 9, 17, 51, 113, 153, 339, 1017, 1237, 1921, 3711, 5763, 11133, 17289, 21029, 63087, 139781, 189261, 419343, 1258029, 2376277, 7128831, 21386493]

約数ペア:

[(1, 21386493), (3, 7128831), (9, 2376277), (17, 1258029), (51, 419343), (113, 189261), (153, 139781), (339, 63087), (1017, 21029), (1237, 17289), (1921, 11133), (3711, 5763)]