20465055

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^3\times {\mathrm{23}}^1$

素因数の和:79

約数の個数: 80

約数和(自身を含む): 41469120

約数和(自身を除く): 21004065

約数列:

[1, 3, 5, 9, 13, 15, 23, 27, 39, 45, 65, 69, 81, 115, 117, 135, 169, 195, 207, 299, 345, 351, 405, 507, 585, 621, 845, 897, 1035, 1053, 1495, 1521, 1755, 1863, 2197, 2535, 2691, 3105, 3887, 4485, 4563, 5265, 6591, 7605, 8073, 9315, 10985, 11661, 13455, 13689, 19435, 19773, 22815, 24219, 32955, 34983, 40365, 50531, 58305, 59319, 68445, 98865, 104949, 121095, 151593, 174915, 177957, 252655, 296595, 314847, 454779, 524745, 757965, 889785, 1364337, 1574235, 2273895, 4093011, 6821685, 20465055]

約数ペア:

[(1, 20465055), (3, 6821685), (5, 4093011), (9, 2273895), (13, 1574235), (15, 1364337), (23, 889785), (27, 757965), (39, 524745), (45, 454779), (65, 314847), (69, 296595), (81, 252655), (115, 177957), (117, 174915), (135, 151593), (169, 121095), (195, 104949), (207, 98865), (299, 68445), (345, 59319), (351, 58305), (405, 50531), (507, 40365), (585, 34983), (621, 32955), (845, 24219), (897, 22815), (1035, 19773), (1053, 19435), (1495, 13689), (1521, 13455), (1755, 11661), (1863, 10985), (2197, 9315), (2535, 8073), (2691, 7605), (3105, 6591), (3887, 5265), (4485, 4563)]