16178840

素因数分解:

$2^3\times 5^1\times {\mathrm{631}}^1\times {\mathrm{641}}^1$

素因数の和:1283

約数の個数: 32

約数和(自身を含む): 36516960

約数和(自身を除く): 20338120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 631, 641, 1262, 1282, 2524, 2564, 3155, 3205, 5048, 5128, 6310, 6410, 12620, 12820, 25240, 25640, 404471, 808942, 1617884, 2022355, 3235768, 4044710, 8089420, 16178840]

約数ペア:

[(1, 16178840), (2, 8089420), (4, 4044710), (5, 3235768), (8, 2022355), (10, 1617884), (20, 808942), (40, 404471), (631, 25640), (641, 25240), (1262, 12820), (1282, 12620), (2524, 6410), (2564, 6310), (3155, 5128), (3205, 5048)]