163965980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{115469}}^1$

素因数の和:115549

約数の個数: 24

約数和(自身を含む): 349181280

約数和(自身を除く): 185215300

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 115469, 230938, 461876, 577345, 1154690, 2309380, 8198299, 16396598, 32793196, 40991495, 81982990, 163965980]

約数ペア:

[(1, 163965980), (2, 81982990), (4, 40991495), (5, 32793196), (10, 16396598), (20, 8198299), (71, 2309380), (142, 1154690), (284, 577345), (355, 461876), (710, 230938), (1420, 115469)]