2788990520

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{501617}}^1$

素因数の和:501767

約数の個数: 32

約数和(自身を含む): 6320386800

約数和(自身を除く): 3531396280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 501617, 1003234, 2006468, 2508085, 4012936, 5016170, 10032340, 20064680, 69724763, 139449526, 278899052, 348623815, 557798104, 697247630, 1394495260, 2788990520]

約数ペア:

[(1, 2788990520), (2, 1394495260), (4, 697247630), (5, 557798104), (8, 348623815), (10, 278899052), (20, 139449526), (40, 69724763), (139, 20064680), (278, 10032340), (556, 5016170), (695, 4012936), (1112, 2508085), (1390, 2006468), (2780, 1003234), (5560, 501617)]