18997900

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{6551}}^1$

素因数の和:6594

約数の個数: 36

約数和(自身を含む): 42653520

約数和(自身を除く): 23655620

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 100, 116, 145, 290, 580, 725, 1450, 2900, 6551, 13102, 26204, 32755, 65510, 131020, 163775, 189979, 327550, 379958, 655100, 759916, 949895, 1899790, 3799580, 4749475, 9498950, 18997900]

約数ペア:

[(1, 18997900), (2, 9498950), (4, 4749475), (5, 3799580), (10, 1899790), (20, 949895), (25, 759916), (29, 655100), (50, 379958), (58, 327550), (100, 189979), (116, 163775), (145, 131020), (290, 65510), (580, 32755), (725, 26204), (1450, 13102), (2900, 6551)]