18887240

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{3169}}^1$

素因数の和:3329

約数の個数: 32

約数和(自身を含む): 42795000

約数和(自身を除く): 23907760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 596, 745, 1192, 1490, 2980, 3169, 5960, 6338, 12676, 15845, 25352, 31690, 63380, 126760, 472181, 944362, 1888724, 2360905, 3777448, 4721810, 9443620, 18887240]

約数ペア:

[(1, 18887240), (2, 9443620), (4, 4721810), (5, 3777448), (8, 2360905), (10, 1888724), (20, 944362), (40, 472181), (149, 126760), (298, 63380), (596, 31690), (745, 25352), (1192, 15845), (1490, 12676), (2980, 6338), (3169, 5960)]