20268920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{191}}^1\times {\mathrm{379}}^1$

素因数の和:588

約数の個数: 64

約数和(自身を含む): 52531200

約数和(自身を除く): 32262280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 191, 280, 379, 382, 758, 764, 955, 1337, 1516, 1528, 1895, 1910, 2653, 2674, 3032, 3790, 3820, 5306, 5348, 6685, 7580, 7640, 10612, 10696, 13265, 13370, 15160, 21224, 26530, 26740, 53060, 53480, 72389, 106120, 144778, 289556, 361945, 506723, 579112, 723890, 1013446, 1447780, 2026892, 2533615, 2895560, 4053784, 5067230, 10134460, 20268920]

約数ペア:

[(1, 20268920), (2, 10134460), (4, 5067230), (5, 4053784), (7, 2895560), (8, 2533615), (10, 2026892), (14, 1447780), (20, 1013446), (28, 723890), (35, 579112), (40, 506723), (56, 361945), (70, 289556), (140, 144778), (191, 106120), (280, 72389), (379, 53480), (382, 53060), (758, 26740), (764, 26530), (955, 21224), (1337, 15160), (1516, 13370), (1528, 13265), (1895, 10696), (1910, 10612), (2653, 7640), (2674, 7580), (3032, 6685), (3790, 5348), (3820, 5306)]