21340137

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{859}}^1$

素因数の和:902

約数の個数: 36

約数和(自身を含む): 35882640

約数和(自身を除く): 14542503

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 169, 273, 507, 637, 859, 1183, 1911, 2577, 3549, 6013, 8281, 11167, 18039, 24843, 33501, 42091, 78169, 126273, 145171, 234507, 435513, 547183, 1016197, 1641549, 3048591, 7113379, 21340137]

約数ペア:

[(1, 21340137), (3, 7113379), (7, 3048591), (13, 1641549), (21, 1016197), (39, 547183), (49, 435513), (91, 234507), (147, 145171), (169, 126273), (273, 78169), (507, 42091), (637, 33501), (859, 24843), (1183, 18039), (1911, 11167), (2577, 8281), (3549, 6013)]