19849705

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1\times {\mathrm{431}}^1$

素因数の和:648

約数の個数: 16

約数和(自身を含む): 24427008

約数和(自身を除く): 4577303

約数列:

[1, 5, 61, 151, 305, 431, 755, 2155, 9211, 26291, 46055, 65081, 131455, 325405, 3969941, 19849705]

約数ペア:

[(1, 19849705), (5, 3969941), (61, 325405), (151, 131455), (305, 65081), (431, 46055), (755, 26291), (2155, 9211)]