20446860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{547}}^1$

素因数の和:655

約数の個数: 96

約数和(自身を含む): 66286080

約数和(自身を除く): 45839220

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 89, 105, 140, 178, 210, 267, 356, 420, 445, 534, 547, 623, 890, 1068, 1094, 1246, 1335, 1641, 1780, 1869, 2188, 2492, 2670, 2735, 3115, 3282, 3738, 3829, 5340, 5470, 6230, 6564, 7476, 7658, 8205, 9345, 10940, 11487, 12460, 15316, 16410, 18690, 19145, 22974, 32820, 37380, 38290, 45948, 48683, 57435, 76580, 97366, 114870, 146049, 194732, 229740, 243415, 292098, 340781, 486830, 584196, 681562, 730245, 973660, 1022343, 1363124, 1460490, 1703905, 2044686, 2920980, 3407810, 4089372, 5111715, 6815620, 10223430, 20446860]

約数ペア:

[(1, 20446860), (2, 10223430), (3, 6815620), (4, 5111715), (5, 4089372), (6, 3407810), (7, 2920980), (10, 2044686), (12, 1703905), (14, 1460490), (15, 1363124), (20, 1022343), (21, 973660), (28, 730245), (30, 681562), (35, 584196), (42, 486830), (60, 340781), (70, 292098), (84, 243415), (89, 229740), (105, 194732), (140, 146049), (178, 114870), (210, 97366), (267, 76580), (356, 57435), (420, 48683), (445, 45948), (534, 38290), (547, 37380), (623, 32820), (890, 22974), (1068, 19145), (1094, 18690), (1246, 16410), (1335, 15316), (1641, 12460), (1780, 11487), (1869, 10940), (2188, 9345), (2492, 8205), (2670, 7658), (2735, 7476), (3115, 6564), (3282, 6230), (3738, 5470), (3829, 5340)]