21692847

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:303

約数の個数: 32

約数和(自身を含む): 32762880

約数和(自身を除く): 11070033

約数列:

[1, 3, 11, 33, 53, 79, 157, 159, 237, 471, 583, 869, 1727, 1749, 2607, 4187, 5181, 8321, 12403, 12561, 24963, 37209, 46057, 91531, 136433, 138171, 274593, 409299, 657359, 1972077, 7230949, 21692847]

約数ペア:

[(1, 21692847), (3, 7230949), (11, 1972077), (33, 657359), (53, 409299), (79, 274593), (157, 138171), (159, 136433), (237, 91531), (471, 46057), (583, 37209), (869, 24963), (1727, 12561), (1749, 12403), (2607, 8321), (4187, 5181)]