18470440

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{1129}}^1$

素因数の和:1549

約数の個数: 32

約数和(自身を含む): 41697000

約数和(自身を除く): 23226560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1129, 1636, 2045, 2258, 3272, 4090, 4516, 5645, 8180, 9032, 11290, 16360, 22580, 45160, 461761, 923522, 1847044, 2308805, 3694088, 4617610, 9235220, 18470440]

約数ペア:

[(1, 18470440), (2, 9235220), (4, 4617610), (5, 3694088), (8, 2308805), (10, 1847044), (20, 923522), (40, 461761), (409, 45160), (818, 22580), (1129, 16360), (1636, 11290), (2045, 9032), (2258, 8180), (3272, 5645), (4090, 4516)]