1581220

素因数分解:

$2^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{457}}^1$

素因数の和:639

約数の個数: 24

約数和(自身を含む): 3347064

約数和(自身を除く): 1765844

約数列:

[1, 2, 4, 5, 10, 20, 173, 346, 457, 692, 865, 914, 1730, 1828, 2285, 3460, 4570, 9140, 79061, 158122, 316244, 395305, 790610, 1581220]

約数ペア:

[(1, 1581220), (2, 790610), (4, 395305), (5, 316244), (10, 158122), (20, 79061), (173, 9140), (346, 4570), (457, 3460), (692, 2285), (865, 1828), (914, 1730)]