21184904

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6571}}^1$

素因数の和:6621

約数の個数: 32

約数和(自身を含む): 44163840

約数和(自身を除く): 22978936

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 248, 403, 806, 1612, 3224, 6571, 13142, 26284, 52568, 85423, 170846, 203701, 341692, 407402, 683384, 814804, 1629608, 2648113, 5296226, 10592452, 21184904]

約数ペア:

[(1, 21184904), (2, 10592452), (4, 5296226), (8, 2648113), (13, 1629608), (26, 814804), (31, 683384), (52, 407402), (62, 341692), (104, 203701), (124, 170846), (248, 85423), (403, 52568), (806, 26284), (1612, 13142), (3224, 6571)]