399423025

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{347}}^1\times {\mathrm{1123}}^1$

素因数の和:1521

約数の個数: 24

約数和(自身を含む): 509279904

約数和(自身を除く): 109856879

約数列:

[1, 5, 25, 41, 205, 347, 1025, 1123, 1735, 5615, 8675, 14227, 28075, 46043, 71135, 230215, 355675, 389681, 1151075, 1948405, 9742025, 15976921, 79884605, 399423025]

約数ペア:

[(1, 399423025), (5, 79884605), (25, 15976921), (41, 9742025), (205, 1948405), (347, 1151075), (1025, 389681), (1123, 355675), (1735, 230215), (5615, 71135), (8675, 46043), (14227, 28075)]