21156990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{79}}^2\times {\mathrm{113}}^1$

素因数の和:281

約数の個数: 48

約数和(自身を含む): 51882768

約数和(自身を除く): 30725778

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 79, 113, 158, 226, 237, 339, 395, 474, 565, 678, 790, 1130, 1185, 1695, 2370, 3390, 6241, 8927, 12482, 17854, 18723, 26781, 31205, 37446, 44635, 53562, 62410, 89270, 93615, 133905, 187230, 267810, 705233, 1410466, 2115699, 3526165, 4231398, 7052330, 10578495, 21156990]

約数ペア:

[(1, 21156990), (2, 10578495), (3, 7052330), (5, 4231398), (6, 3526165), (10, 2115699), (15, 1410466), (30, 705233), (79, 267810), (113, 187230), (158, 133905), (226, 93615), (237, 89270), (339, 62410), (395, 53562), (474, 44635), (565, 37446), (678, 31205), (790, 26781), (1130, 18723), (1185, 17854), (1695, 12482), (2370, 8927), (3390, 6241)]