161749360

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{28477}}^1$

素因数の和:28561

約数の個数: 40

約数和(自身を含む): 381377376

約数和(自身を除く): 219628016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 28477, 56954, 113908, 142385, 227816, 284770, 455632, 569540, 1139080, 2021867, 2278160, 4043734, 8087468, 10109335, 16174936, 20218670, 32349872, 40437340, 80874680, 161749360]

約数ペア:

[(1, 161749360), (2, 80874680), (4, 40437340), (5, 32349872), (8, 20218670), (10, 16174936), (16, 10109335), (20, 8087468), (40, 4043734), (71, 2278160), (80, 2021867), (142, 1139080), (284, 569540), (355, 455632), (568, 284770), (710, 227816), (1136, 142385), (1420, 113908), (2840, 56954), (5680, 28477)]