85876820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{138511}}^1$

素因数の和:138551

約数の個数: 24

約数和(自身を含む): 186160128

約数和(自身を除く): 100283308

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 138511, 277022, 554044, 692555, 1385110, 2770220, 4293841, 8587682, 17175364, 21469205, 42938410, 85876820]

約数ペア:

[(1, 85876820), (2, 42938410), (4, 21469205), (5, 17175364), (10, 8587682), (20, 4293841), (31, 2770220), (62, 1385110), (124, 692555), (155, 554044), (310, 277022), (620, 138511)]