21010580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{55291}}^1$

素因数の和:55319

約数の個数: 24

約数和(自身を含む): 46445280

約数和(自身を除く): 25434700

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 55291, 110582, 221164, 276455, 552910, 1050529, 1105820, 2101058, 4202116, 5252645, 10505290, 21010580]

約数ペア:

[(1, 21010580), (2, 10505290), (4, 5252645), (5, 4202116), (10, 2101058), (19, 1105820), (20, 1050529), (38, 552910), (76, 276455), (95, 221164), (190, 110582), (380, 55291)]