21920655

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{23957}}^1$

素因数の和:24026

約数の個数: 16

約数和(自身を含む): 35649504

約数和(自身を除く): 13728849

約数列:

[1, 3, 5, 15, 61, 183, 305, 915, 23957, 71871, 119785, 359355, 1461377, 4384131, 7306885, 21920655]

約数ペア:

[(1, 21920655), (3, 7306885), (5, 4384131), (15, 1461377), (61, 359355), (183, 119785), (305, 71871), (915, 23957)]