18801575

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1$

素因数の和:164

約数の個数: 48

約数和(自身を含む): 27560736

約数和(自身を除く): 8759161

約数列:

[1, 5, 13, 17, 25, 41, 65, 83, 85, 205, 221, 325, 415, 425, 533, 697, 1025, 1079, 1105, 1411, 2075, 2665, 3403, 3485, 5395, 5525, 7055, 9061, 13325, 17015, 17425, 18343, 26975, 35275, 44239, 45305, 57851, 85075, 91715, 221195, 226525, 289255, 458575, 752063, 1105975, 1446275, 3760315, 18801575]

約数ペア:

[(1, 18801575), (5, 3760315), (13, 1446275), (17, 1105975), (25, 752063), (41, 458575), (65, 289255), (83, 226525), (85, 221195), (205, 91715), (221, 85075), (325, 57851), (415, 45305), (425, 44239), (533, 35275), (697, 26975), (1025, 18343), (1079, 17425), (1105, 17015), (1411, 13325), (2075, 9061), (2665, 7055), (3403, 5525), (3485, 5395)]