21138403

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{6427}}^1$

素因数の和:6474

約数の個数: 16

約数和(自身を含む): 25917696

約数和(自身を除く): 4779293

約数列:

[1, 11, 13, 23, 143, 253, 299, 3289, 6427, 70697, 83551, 147821, 919061, 1626031, 1921673, 21138403]

約数ペア:

[(1, 21138403), (11, 1921673), (13, 1626031), (23, 919061), (143, 147821), (253, 83551), (299, 70697), (3289, 6427)]