20977582145

素因数分解:

$5^1\times {\mathrm{13}}^3\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{991}}^1$

素因数の和:1123

約数の個数: 64

約数和(自身を含む): 28558172160

約数和(自身を除く): 7580590015

約数列:

[1, 5, 13, 41, 47, 65, 169, 205, 235, 533, 611, 845, 991, 1927, 2197, 2665, 3055, 4955, 6929, 7943, 9635, 10985, 12883, 25051, 34645, 39715, 40631, 46577, 64415, 90077, 103259, 125255, 167479, 203155, 232885, 325663, 450385, 516295, 528203, 605501, 837395, 1628315, 1909657, 2177227, 2641015, 3027505, 4233619, 6866639, 7871513, 9548285, 10886135, 21168095, 24825541, 34333195, 39357565, 89266307, 102329669, 124127705, 322732033, 446331535, 511648345, 1613660165, 4195516429, 20977582145]

約数ペア:

[(1, 20977582145), (5, 4195516429), (13, 1613660165), (41, 511648345), (47, 446331535), (65, 322732033), (169, 124127705), (205, 102329669), (235, 89266307), (533, 39357565), (611, 34333195), (845, 24825541), (991, 21168095), (1927, 10886135), (2197, 9548285), (2665, 7871513), (3055, 6866639), (4955, 4233619), (6929, 3027505), (7943, 2641015), (9635, 2177227), (10985, 1909657), (12883, 1628315), (25051, 837395), (34645, 605501), (39715, 528203), (40631, 516295), (46577, 450385), (64415, 325663), (90077, 232885), (103259, 203155), (125255, 167479)]