21251870

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{839}}^1$

素因数の和:1012

約数の個数: 32

約数和(自身を含む): 40824000

約数和(自身を除く): 19572130

約数列:

[1, 2, 5, 10, 17, 34, 85, 149, 170, 298, 745, 839, 1490, 1678, 2533, 4195, 5066, 8390, 12665, 14263, 25330, 28526, 71315, 125011, 142630, 250022, 625055, 1250110, 2125187, 4250374, 10625935, 21251870]

約数ペア:

[(1, 21251870), (2, 10625935), (5, 4250374), (10, 2125187), (17, 1250110), (34, 625055), (85, 250022), (149, 142630), (170, 125011), (298, 71315), (745, 28526), (839, 25330), (1490, 14263), (1678, 12665), (2533, 8390), (4195, 5066)]