20051094025

素因数分解:

$5^2\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{181}}^1\times {\mathrm{449}}^1$

素因数の和:850

約数の個数: 48

約数和(自身を含む): 25592112000

約数和(自身を除く): 5541017975

約数列:

[1, 5, 25, 71, 139, 181, 355, 449, 695, 905, 1775, 2245, 3475, 4525, 9869, 11225, 12851, 25159, 31879, 49345, 62411, 64255, 81269, 125795, 159395, 246725, 312055, 321275, 406345, 628975, 796975, 1560275, 1786289, 2031725, 4431181, 5770099, 8931445, 11296391, 22155905, 28850495, 44657225, 56481955, 110779525, 144252475, 282409775, 802043761, 4010218805, 20051094025]

約数ペア:

[(1, 20051094025), (5, 4010218805), (25, 802043761), (71, 282409775), (139, 144252475), (181, 110779525), (355, 56481955), (449, 44657225), (695, 28850495), (905, 22155905), (1775, 11296391), (2245, 8931445), (3475, 5770099), (4525, 4431181), (9869, 2031725), (11225, 1786289), (12851, 1560275), (25159, 796975), (31879, 628975), (49345, 406345), (62411, 321275), (64255, 312055), (81269, 246725), (125795, 159395)]