21229380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{1999}}^1$

素因数の和:2073

約数の個数: 72

約数和(自身を含む): 65520000

約数和(自身を除く): 44290620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 59, 60, 90, 118, 177, 180, 236, 295, 354, 531, 590, 708, 885, 1062, 1180, 1770, 1999, 2124, 2655, 3540, 3998, 5310, 5997, 7996, 9995, 10620, 11994, 17991, 19990, 23988, 29985, 35982, 39980, 59970, 71964, 89955, 117941, 119940, 179910, 235882, 353823, 359820, 471764, 589705, 707646, 1061469, 1179410, 1415292, 1769115, 2122938, 2358820, 3538230, 4245876, 5307345, 7076460, 10614690, 21229380]

約数ペア:

[(1, 21229380), (2, 10614690), (3, 7076460), (4, 5307345), (5, 4245876), (6, 3538230), (9, 2358820), (10, 2122938), (12, 1769115), (15, 1415292), (18, 1179410), (20, 1061469), (30, 707646), (36, 589705), (45, 471764), (59, 359820), (60, 353823), (90, 235882), (118, 179910), (177, 119940), (180, 117941), (236, 89955), (295, 71964), (354, 59970), (531, 39980), (590, 35982), (708, 29985), (885, 23988), (1062, 19990), (1180, 17991), (1770, 11994), (1999, 10620), (2124, 9995), (2655, 7996), (3540, 5997), (3998, 5310)]