644192

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{491}}^1$

素因数の和:542

約数の個数: 24

約数和(自身を含む): 1301832

約数和(自身を除く): 657640

約数列:

[1, 2, 4, 8, 16, 32, 41, 82, 164, 328, 491, 656, 982, 1312, 1964, 3928, 7856, 15712, 20131, 40262, 80524, 161048, 322096, 644192]

約数ペア:

[(1, 644192), (2, 322096), (4, 161048), (8, 80524), (16, 40262), (32, 20131), (41, 15712), (82, 7856), (164, 3928), (328, 1964), (491, 1312), (656, 982)]