20198097640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{260419}}^1$

素因数の和:260714

約数の個数: 64

約数和(自身を含む): 52125667200

約数和(自身を除く): 31927569560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 277, 280, 554, 1108, 1385, 1939, 2216, 2770, 3878, 5540, 7756, 9695, 11080, 15512, 19390, 38780, 77560, 260419, 520838, 1041676, 1302095, 1822933, 2083352, 2604190, 3645866, 5208380, 7291732, 9114665, 10416760, 14583464, 18229330, 36458660, 72136063, 72917320, 144272126, 288544252, 360680315, 504952441, 577088504, 721360630, 1009904882, 1442721260, 2019809764, 2524762205, 2885442520, 4039619528, 5049524410, 10099048820, 20198097640]

約数ペア:

[(1, 20198097640), (2, 10099048820), (4, 5049524410), (5, 4039619528), (7, 2885442520), (8, 2524762205), (10, 2019809764), (14, 1442721260), (20, 1009904882), (28, 721360630), (35, 577088504), (40, 504952441), (56, 360680315), (70, 288544252), (140, 144272126), (277, 72917320), (280, 72136063), (554, 36458660), (1108, 18229330), (1385, 14583464), (1939, 10416760), (2216, 9114665), (2770, 7291732), (3878, 5208380), (5540, 3645866), (7756, 2604190), (9695, 2083352), (11080, 1822933), (15512, 1302095), (19390, 1041676), (38780, 520838), (77560, 260419)]