81710360

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{27983}}^1$

素因数の和:28067

約数の個数: 32

約数和(自身を含む): 186373440

約数和(自身を除く): 104663080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 27983, 55966, 111932, 139915, 223864, 279830, 559660, 1119320, 2042759, 4085518, 8171036, 10213795, 16342072, 20427590, 40855180, 81710360]

約数ペア:

[(1, 81710360), (2, 40855180), (4, 20427590), (5, 16342072), (8, 10213795), (10, 8171036), (20, 4085518), (40, 2042759), (73, 1119320), (146, 559660), (292, 279830), (365, 223864), (584, 139915), (730, 111932), (1460, 55966), (2920, 27983)]