405570762020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1091}}^1\times {\mathrm{978269}}^1$

素因数の和:979388

約数の個数: 48

約数和(自身を含む): 897347505600

約数和(自身を除く): 491776743580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 1091, 2182, 4364, 5455, 10910, 20729, 21820, 41458, 82916, 103645, 207290, 414580, 978269, 1956538, 3913076, 4891345, 9782690, 18587111, 19565380, 37174222, 74348444, 92935555, 185871110, 371742220, 1067291479, 2134582958, 4269165916, 5336457395, 10672914790, 20278538101, 21345829580, 40557076202, 81114152404, 101392690505, 202785381010, 405570762020]

約数ペア:

[(1, 405570762020), (2, 202785381010), (4, 101392690505), (5, 81114152404), (10, 40557076202), (19, 21345829580), (20, 20278538101), (38, 10672914790), (76, 5336457395), (95, 4269165916), (190, 2134582958), (380, 1067291479), (1091, 371742220), (2182, 185871110), (4364, 92935555), (5455, 74348444), (10910, 37174222), (20729, 19565380), (21820, 18587111), (41458, 9782690), (82916, 4891345), (103645, 3913076), (207290, 1956538), (414580, 978269)]