19637820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1381}}^1$

素因数の和:1475

約数の個数: 72

約数和(自身を含む): 60365760

約数和(自身を除く): 40727940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 79, 90, 158, 180, 237, 316, 395, 474, 711, 790, 948, 1185, 1381, 1422, 1580, 2370, 2762, 2844, 3555, 4143, 4740, 5524, 6905, 7110, 8286, 12429, 13810, 14220, 16572, 20715, 24858, 27620, 41430, 49716, 62145, 82860, 109099, 124290, 218198, 248580, 327297, 436396, 545495, 654594, 981891, 1090990, 1309188, 1636485, 1963782, 2181980, 3272970, 3927564, 4909455, 6545940, 9818910, 19637820]

約数ペア:

[(1, 19637820), (2, 9818910), (3, 6545940), (4, 4909455), (5, 3927564), (6, 3272970), (9, 2181980), (10, 1963782), (12, 1636485), (15, 1309188), (18, 1090990), (20, 981891), (30, 654594), (36, 545495), (45, 436396), (60, 327297), (79, 248580), (90, 218198), (158, 124290), (180, 109099), (237, 82860), (316, 62145), (395, 49716), (474, 41430), (711, 27620), (790, 24858), (948, 20715), (1185, 16572), (1381, 14220), (1422, 13810), (1580, 12429), (2370, 8286), (2762, 7110), (2844, 6905), (3555, 5524), (4143, 4740)]