21138351

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{173}}^1\times {\mathrm{241}}^1$

素因数の和:443

約数の個数: 24

約数和(自身を含む): 30823056

約数和(自身を除く): 9684705

約数列:

[1, 3, 13, 39, 169, 173, 241, 507, 519, 723, 2249, 3133, 6747, 9399, 29237, 40729, 41693, 87711, 122187, 125079, 542009, 1626027, 7046117, 21138351]

約数ペア:

[(1, 21138351), (3, 7046117), (13, 1626027), (39, 542009), (169, 125079), (173, 122187), (241, 87711), (507, 41693), (519, 40729), (723, 29237), (2249, 9399), (3133, 6747)]