20663080

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{379}}^1$

素因数の和:466

約数の個数: 64

約数和(自身を含む): 49248000

約数和(自身を除く): 28584920

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 47, 58, 94, 116, 145, 188, 232, 235, 290, 376, 379, 470, 580, 758, 940, 1160, 1363, 1516, 1880, 1895, 2726, 3032, 3790, 5452, 6815, 7580, 10904, 10991, 13630, 15160, 17813, 21982, 27260, 35626, 43964, 54520, 54955, 71252, 87928, 89065, 109910, 142504, 178130, 219820, 356260, 439640, 516577, 712520, 1033154, 2066308, 2582885, 4132616, 5165770, 10331540, 20663080]

約数ペア:

[(1, 20663080), (2, 10331540), (4, 5165770), (5, 4132616), (8, 2582885), (10, 2066308), (20, 1033154), (29, 712520), (40, 516577), (47, 439640), (58, 356260), (94, 219820), (116, 178130), (145, 142504), (188, 109910), (232, 89065), (235, 87928), (290, 71252), (376, 54955), (379, 54520), (470, 43964), (580, 35626), (758, 27260), (940, 21982), (1160, 17813), (1363, 15160), (1516, 13630), (1880, 10991), (1895, 10904), (2726, 7580), (3032, 6815), (3790, 5452)]