21228016

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{69829}}^1$

素因数の和:69856

約数の個数: 20

約数和(自身を含む): 43294600

約数和(自身を除く): 22066584

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 69829, 139658, 279316, 558632, 1117264, 1326751, 2653502, 5307004, 10614008, 21228016]

約数ペア:

[(1, 21228016), (2, 10614008), (4, 5307004), (8, 2653502), (16, 1326751), (19, 1117264), (38, 558632), (76, 279316), (152, 139658), (304, 69829)]