20194811

素因数分解:

$7^4\times {\mathrm{13}}^1\times {\mathrm{647}}^1$

素因数の和:688

約数の個数: 20

約数和(自身を含む): 25410672

約数和(自身を除く): 5215861

約数列:

[1, 7, 13, 49, 91, 343, 637, 647, 2401, 4459, 4529, 8411, 31213, 31703, 58877, 221921, 412139, 1553447, 2884973, 20194811]

約数ペア:

[(1, 20194811), (7, 2884973), (13, 1553447), (49, 412139), (91, 221921), (343, 58877), (637, 31703), (647, 31213), (2401, 8411), (4459, 4529)]