725008

素因数分解:

$2^4\times {\mathrm{113}}^1\times {\mathrm{401}}^1$

素因数の和:522

約数の個数: 20

約数和(自身を含む): 1420668

約数和(自身を除く): 695660

約数列:

[1, 2, 4, 8, 16, 113, 226, 401, 452, 802, 904, 1604, 1808, 3208, 6416, 45313, 90626, 181252, 362504, 725008]

約数ペア:

[(1, 725008), (2, 362504), (4, 181252), (8, 90626), (16, 45313), (113, 6416), (226, 3208), (401, 1808), (452, 1604), (802, 904)]