421382840

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{133349}}^1$

素因数の和:133439

約数の個数: 32

約数和(自身を含む): 960120000

約数和(自身を除く): 538737160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 133349, 266698, 533396, 666745, 1066792, 1333490, 2666980, 5333960, 10534571, 21069142, 42138284, 52672855, 84276568, 105345710, 210691420, 421382840]

約数ペア:

[(1, 421382840), (2, 210691420), (4, 105345710), (5, 84276568), (8, 52672855), (10, 42138284), (20, 21069142), (40, 10534571), (79, 5333960), (158, 2666980), (316, 1333490), (395, 1066792), (632, 666745), (790, 533396), (1580, 266698), (3160, 133349)]