21221176

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{937}}^1$

素因数の和:1111

約数の個数: 32

約数和(自身を含む): 42210000

約数和(自身を除く): 20988824

約数列:

[1, 2, 4, 8, 19, 38, 76, 149, 152, 298, 596, 937, 1192, 1874, 2831, 3748, 5662, 7496, 11324, 17803, 22648, 35606, 71212, 139613, 142424, 279226, 558452, 1116904, 2652647, 5305294, 10610588, 21221176]

約数ペア:

[(1, 21221176), (2, 10610588), (4, 5305294), (8, 2652647), (19, 1116904), (38, 558452), (76, 279226), (149, 142424), (152, 139613), (298, 71212), (596, 35606), (937, 22648), (1192, 17803), (1874, 11324), (2831, 7496), (3748, 5662)]