17996880980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{67399}}^1$

素因数の和:67513

約数の個数: 72

約数和(自身を含む): 41442912000

約数和(自身を除く): 23446031020

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 169, 260, 316, 338, 395, 676, 790, 845, 1027, 1580, 1690, 2054, 3380, 4108, 5135, 10270, 13351, 20540, 26702, 53404, 66755, 67399, 133510, 134798, 267020, 269596, 336995, 673990, 876187, 1347980, 1752374, 3504748, 4380935, 5324521, 8761870, 10649042, 11390431, 17523740, 21298084, 22780862, 26622605, 45561724, 53245210, 56952155, 69218773, 106490420, 113904310, 138437546, 227808620, 276875092, 346093865, 692187730, 899844049, 1384375460, 1799688098, 3599376196, 4499220245, 8998440490, 17996880980]

約数ペア:

[(1, 17996880980), (2, 8998440490), (4, 4499220245), (5, 3599376196), (10, 1799688098), (13, 1384375460), (20, 899844049), (26, 692187730), (52, 346093865), (65, 276875092), (79, 227808620), (130, 138437546), (158, 113904310), (169, 106490420), (260, 69218773), (316, 56952155), (338, 53245210), (395, 45561724), (676, 26622605), (790, 22780862), (845, 21298084), (1027, 17523740), (1580, 11390431), (1690, 10649042), (2054, 8761870), (3380, 5324521), (4108, 4380935), (5135, 3504748), (10270, 1752374), (13351, 1347980), (20540, 876187), (26702, 673990), (53404, 336995), (66755, 269596), (67399, 267020), (133510, 134798)]