21323913

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{137}}^1\times {\mathrm{307}}^1$

素因数の和:473

約数の個数: 24

約数和(自身を含む): 31112928

約数和(自身を除く): 9789015

約数列:

[1, 3, 13, 39, 137, 169, 307, 411, 507, 921, 1781, 3991, 5343, 11973, 23153, 42059, 51883, 69459, 126177, 155649, 546767, 1640301, 7107971, 21323913]

約数ペア:

[(1, 21323913), (3, 7107971), (13, 1640301), (39, 546767), (137, 155649), (169, 126177), (307, 69459), (411, 51883), (507, 42059), (921, 23153), (1781, 11973), (3991, 5343)]