399917776

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{1315519}}^1$

素因数の和:1315546

約数の個数: 20

約数和(自身を含む): 815622400

約数和(自身を除く): 415704624

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 1315519, 2631038, 5262076, 10524152, 21048304, 24994861, 49989722, 99979444, 199958888, 399917776]

約数ペア:

[(1, 399917776), (2, 199958888), (4, 99979444), (8, 49989722), (16, 24994861), (19, 21048304), (38, 10524152), (76, 5262076), (152, 2631038), (304, 1315519)]