20425590

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7321}}^1$

素因数の和:7365

約数の個数: 48

約数和(自身を含む): 54827136

約数和(自身を除く): 34401546

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 31, 45, 62, 90, 93, 155, 186, 279, 310, 465, 558, 930, 1395, 2790, 7321, 14642, 21963, 36605, 43926, 65889, 73210, 109815, 131778, 219630, 226951, 329445, 453902, 658890, 680853, 1134755, 1361706, 2042559, 2269510, 3404265, 4085118, 6808530, 10212795, 20425590]

約数ペア:

[(1, 20425590), (2, 10212795), (3, 6808530), (5, 4085118), (6, 3404265), (9, 2269510), (10, 2042559), (15, 1361706), (18, 1134755), (30, 680853), (31, 658890), (45, 453902), (62, 329445), (90, 226951), (93, 219630), (155, 131778), (186, 109815), (279, 73210), (310, 65889), (465, 43926), (558, 36605), (930, 21963), (1395, 14642), (2790, 7321)]