21395940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8293}}^1$

素因数の和:8348

約数の個数: 48

約数和(自身を含む): 61309248

約数和(自身を除く): 39913308

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 516, 645, 860, 1290, 2580, 8293, 16586, 24879, 33172, 41465, 49758, 82930, 99516, 124395, 165860, 248790, 356599, 497580, 713198, 1069797, 1426396, 1782995, 2139594, 3565990, 4279188, 5348985, 7131980, 10697970, 21395940]

約数ペア:

[(1, 21395940), (2, 10697970), (3, 7131980), (4, 5348985), (5, 4279188), (6, 3565990), (10, 2139594), (12, 1782995), (15, 1426396), (20, 1069797), (30, 713198), (43, 497580), (60, 356599), (86, 248790), (129, 165860), (172, 124395), (215, 99516), (258, 82930), (430, 49758), (516, 41465), (645, 33172), (860, 24879), (1290, 16586), (2580, 8293)]