21881249

素因数分解:

${\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{673}}^1$

素因数の和:788

約数の個数: 16

約数和(自身を含む): 24571344

約数和(自身を除く): 2690095

約数列:

[1, 13, 41, 61, 533, 673, 793, 2501, 8749, 27593, 32513, 41053, 358709, 533689, 1683173, 21881249]

約数ペア:

[(1, 21881249), (13, 1683173), (41, 533689), (61, 358709), (533, 41053), (673, 32513), (793, 27593), (2501, 8749)]