20020455

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{4889}}^1$

素因数の和:4920

約数の個数: 48

約数和(自身を含む): 42719040

約数和(自身を除く): 22698585

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 63, 65, 91, 105, 117, 195, 273, 315, 455, 585, 819, 1365, 4095, 4889, 14667, 24445, 34223, 44001, 63557, 73335, 102669, 171115, 190671, 220005, 308007, 317785, 444899, 513345, 572013, 953355, 1334697, 1540035, 2224495, 2860065, 4004091, 6673485, 20020455]

約数ペア:

[(1, 20020455), (3, 6673485), (5, 4004091), (7, 2860065), (9, 2224495), (13, 1540035), (15, 1334697), (21, 953355), (35, 572013), (39, 513345), (45, 444899), (63, 317785), (65, 308007), (91, 220005), (105, 190671), (117, 171115), (195, 102669), (273, 73335), (315, 63557), (455, 44001), (585, 34223), (819, 24445), (1365, 14667), (4095, 4889)]