19159760

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1723}}^1$

素因数の和:1875

約数の個数: 40

約数和(自身を含む): 44892960

約数和(自身を除く): 25733200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 1723, 2224, 2780, 3446, 5560, 6892, 8615, 11120, 13784, 17230, 27568, 34460, 68920, 137840, 239497, 478994, 957988, 1197485, 1915976, 2394970, 3831952, 4789940, 9579880, 19159760]

約数ペア:

[(1, 19159760), (2, 9579880), (4, 4789940), (5, 3831952), (8, 2394970), (10, 1915976), (16, 1197485), (20, 957988), (40, 478994), (80, 239497), (139, 137840), (278, 68920), (556, 34460), (695, 27568), (1112, 17230), (1390, 13784), (1723, 11120), (2224, 8615), (2780, 6892), (3446, 5560)]