12840620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{131}}^1$

素因数の和:195

約数の個数: 72

約数和(自身を含む): 30436560

約数和(自身を除く): 17595940

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 131, 145, 169, 260, 262, 290, 338, 377, 524, 580, 655, 676, 754, 845, 1310, 1508, 1690, 1703, 1885, 2620, 3380, 3406, 3770, 3799, 4901, 6812, 7540, 7598, 8515, 9802, 15196, 17030, 18995, 19604, 22139, 24505, 34060, 37990, 44278, 49010, 49387, 75980, 88556, 98020, 98774, 110695, 197548, 221390, 246935, 442780, 493870, 642031, 987740, 1284062, 2568124, 3210155, 6420310, 12840620]

約数ペア:

[(1, 12840620), (2, 6420310), (4, 3210155), (5, 2568124), (10, 1284062), (13, 987740), (20, 642031), (26, 493870), (29, 442780), (52, 246935), (58, 221390), (65, 197548), (116, 110695), (130, 98774), (131, 98020), (145, 88556), (169, 75980), (260, 49387), (262, 49010), (290, 44278), (338, 37990), (377, 34060), (524, 24505), (580, 22139), (655, 19604), (676, 18995), (754, 17030), (845, 15196), (1310, 9802), (1508, 8515), (1690, 7598), (1703, 7540), (1885, 6812), (2620, 4901), (3380, 3799), (3406, 3770)]