215866861

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{3637}}^1$

素因数の和:3844

約数の個数: 16

約数和(自身を含む): 252622720

約数和(自身を除く): 36755859

約数列:

[1, 7, 61, 139, 427, 973, 3637, 8479, 25459, 59353, 221857, 505543, 1552999, 3538801, 30838123, 215866861]

約数ペア:

[(1, 215866861), (7, 30838123), (61, 3538801), (139, 1552999), (427, 505543), (973, 221857), (3637, 59353), (8479, 25459)]