21251152

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1439}}^1$

素因数の和:1531

約数の個数: 40

約数和(自身を含む): 44997120

約数和(自身を除く): 23745968

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 71, 104, 142, 208, 284, 568, 923, 1136, 1439, 1846, 2878, 3692, 5756, 7384, 11512, 14768, 18707, 23024, 37414, 74828, 102169, 149656, 204338, 299312, 408676, 817352, 1328197, 1634704, 2656394, 5312788, 10625576, 21251152]

約数ペア:

[(1, 21251152), (2, 10625576), (4, 5312788), (8, 2656394), (13, 1634704), (16, 1328197), (26, 817352), (52, 408676), (71, 299312), (104, 204338), (142, 149656), (208, 102169), (284, 74828), (568, 37414), (923, 23024), (1136, 18707), (1439, 14768), (1846, 11512), (2878, 7384), (3692, 5756)]