20136025

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{167}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 31497984

約数和(自身を除く): 11361959

約数列:

[1, 5, 7, 13, 25, 35, 53, 65, 91, 167, 175, 265, 325, 371, 455, 689, 835, 1169, 1325, 1855, 2171, 2275, 3445, 4175, 4823, 5845, 8851, 9275, 10855, 15197, 17225, 24115, 29225, 44255, 54275, 61957, 75985, 115063, 120575, 221275, 309785, 379925, 575315, 805441, 1548925, 2876575, 4027205, 20136025]

約数ペア:

[(1, 20136025), (5, 4027205), (7, 2876575), (13, 1548925), (25, 805441), (35, 575315), (53, 379925), (65, 309785), (91, 221275), (167, 120575), (175, 115063), (265, 75985), (325, 61957), (371, 54275), (455, 44255), (689, 29225), (835, 24115), (1169, 17225), (1325, 15197), (1855, 10855), (2171, 9275), (2275, 8851), (3445, 5845), (4175, 4823)]