21205812

素因数分解:

$2^2\times 3^1\times {\mathrm{79}}^1\times {\mathrm{22369}}^1$

素因数の和:22455

約数の個数: 24

約数和(自身を含む): 50108800

約数和(自身を除く): 28902988

約数列:

[1, 2, 3, 4, 6, 12, 79, 158, 237, 316, 474, 948, 22369, 44738, 67107, 89476, 134214, 268428, 1767151, 3534302, 5301453, 7068604, 10602906, 21205812]

約数ペア:

[(1, 21205812), (2, 10602906), (3, 7068604), (4, 5301453), (6, 3534302), (12, 1767151), (79, 268428), (158, 134214), (237, 89476), (316, 67107), (474, 44738), (948, 22369)]