18646390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:217

約数の個数: 64

約数和(自身を含む): 40279680

約数和(自身を除く): 21633290

約数列:

[1, 2, 5, 7, 10, 14, 35, 41, 70, 73, 82, 89, 146, 178, 205, 287, 365, 410, 445, 511, 574, 623, 730, 890, 1022, 1246, 1435, 2555, 2870, 2993, 3115, 3649, 5110, 5986, 6230, 6497, 7298, 12994, 14965, 18245, 20951, 25543, 29930, 32485, 36490, 41902, 45479, 51086, 64970, 90958, 104755, 127715, 209510, 227395, 255430, 266377, 454790, 532754, 1331885, 1864639, 2663770, 3729278, 9323195, 18646390]

約数ペア:

[(1, 18646390), (2, 9323195), (5, 3729278), (7, 2663770), (10, 1864639), (14, 1331885), (35, 532754), (41, 454790), (70, 266377), (73, 255430), (82, 227395), (89, 209510), (146, 127715), (178, 104755), (205, 90958), (287, 64970), (365, 51086), (410, 45479), (445, 41902), (511, 36490), (574, 32485), (623, 29930), (730, 25543), (890, 20951), (1022, 18245), (1246, 14965), (1435, 12994), (2555, 7298), (2870, 6497), (2993, 6230), (3115, 5986), (3649, 5110)]