16520875

素因数分解:

$5^3\times 7^1\times {\mathrm{79}}^1\times {\mathrm{239}}^1$

素因数の和:340

約数の個数: 32

約数和(自身を含む): 23961600

約数和(自身を除く): 7440725

約数列:

[1, 5, 7, 25, 35, 79, 125, 175, 239, 395, 553, 875, 1195, 1673, 1975, 2765, 5975, 8365, 9875, 13825, 18881, 29875, 41825, 69125, 94405, 132167, 209125, 472025, 660835, 2360125, 3304175, 16520875]

約数ペア:

[(1, 16520875), (5, 3304175), (7, 2360125), (25, 660835), (35, 472025), (79, 209125), (125, 132167), (175, 94405), (239, 69125), (395, 41825), (553, 29875), (875, 18881), (1195, 13825), (1673, 9875), (1975, 8365), (2765, 5975)]