219840995

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{128939}}^1$

素因数の和:128986

約数の個数: 16

約数和(自身を含む): 297077760

約数和(自身を除く): 77236765

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 128939, 644695, 1418329, 3997109, 7091645, 19985545, 43968199, 219840995]

約数ペア:

[(1, 219840995), (5, 43968199), (11, 19985545), (31, 7091645), (55, 3997109), (155, 1418329), (341, 644695), (1705, 128939)]