2690740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:232

約数の個数: 48

約数和(自身を含む): 6209280

約数和(自身を除く): 3518540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 131, 158, 260, 262, 316, 395, 524, 655, 790, 1027, 1310, 1580, 1703, 2054, 2620, 3406, 4108, 5135, 6812, 8515, 10270, 10349, 17030, 20540, 20698, 34060, 41396, 51745, 103490, 134537, 206980, 269074, 538148, 672685, 1345370, 2690740]

約数ペア:

[(1, 2690740), (2, 1345370), (4, 672685), (5, 538148), (10, 269074), (13, 206980), (20, 134537), (26, 103490), (52, 51745), (65, 41396), (79, 34060), (130, 20698), (131, 20540), (158, 17030), (260, 10349), (262, 10270), (316, 8515), (395, 6812), (524, 5135), (655, 4108), (790, 3406), (1027, 2620), (1310, 2054), (1580, 1703)]