21188037

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{23}}^2\times {\mathrm{79}}^1$

素因数の和:154

約数の個数: 36

約数和(自身を含む): 32383680

約数和(自身を除く): 11195643

約数列:

[1, 3, 13, 23, 39, 69, 79, 169, 237, 299, 507, 529, 897, 1027, 1587, 1817, 3081, 3887, 5451, 6877, 11661, 13351, 20631, 23621, 40053, 41791, 70863, 89401, 125373, 268203, 307073, 543283, 921219, 1629849, 7062679, 21188037]

約数ペア:

[(1, 21188037), (3, 7062679), (13, 1629849), (23, 921219), (39, 543283), (69, 307073), (79, 268203), (169, 125373), (237, 89401), (299, 70863), (507, 41791), (529, 40053), (897, 23621), (1027, 20631), (1587, 13351), (1817, 11661), (3081, 6877), (3887, 5451)]