18017740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{131}}^1$

素因数の和:199

約数の個数: 72

約数和(自身を含む): 42921648

約数和(自身を除く): 24903908

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 52, 65, 92, 115, 130, 131, 230, 260, 262, 299, 460, 524, 529, 598, 655, 1058, 1196, 1310, 1495, 1703, 2116, 2620, 2645, 2990, 3013, 3406, 5290, 5980, 6026, 6812, 6877, 8515, 10580, 12052, 13754, 15065, 17030, 27508, 30130, 34060, 34385, 39169, 60260, 68770, 69299, 78338, 137540, 138598, 156676, 195845, 277196, 346495, 391690, 692990, 783380, 900887, 1385980, 1801774, 3603548, 4504435, 9008870, 18017740]

約数ペア:

[(1, 18017740), (2, 9008870), (4, 4504435), (5, 3603548), (10, 1801774), (13, 1385980), (20, 900887), (23, 783380), (26, 692990), (46, 391690), (52, 346495), (65, 277196), (92, 195845), (115, 156676), (130, 138598), (131, 137540), (230, 78338), (260, 69299), (262, 68770), (299, 60260), (460, 39169), (524, 34385), (529, 34060), (598, 30130), (655, 27508), (1058, 17030), (1196, 15065), (1310, 13754), (1495, 12052), (1703, 10580), (2116, 8515), (2620, 6877), (2645, 6812), (2990, 6026), (3013, 5980), (3406, 5290)]