31490980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{1049}}^1$

素因数の和:1156

約数の個数: 48

約数和(自身を含む): 70560000

約数和(自身を除く): 39069020

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 79, 95, 158, 190, 316, 380, 395, 790, 1049, 1501, 1580, 2098, 3002, 4196, 5245, 6004, 7505, 10490, 15010, 19931, 20980, 30020, 39862, 79724, 82871, 99655, 165742, 199310, 331484, 398620, 414355, 828710, 1574549, 1657420, 3149098, 6298196, 7872745, 15745490, 31490980]

約数ペア:

[(1, 31490980), (2, 15745490), (4, 7872745), (5, 6298196), (10, 3149098), (19, 1657420), (20, 1574549), (38, 828710), (76, 414355), (79, 398620), (95, 331484), (158, 199310), (190, 165742), (316, 99655), (380, 82871), (395, 79724), (790, 39862), (1049, 30020), (1501, 20980), (1580, 19931), (2098, 15010), (3002, 10490), (4196, 7505), (5245, 6004)]