20949747

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{5903}}^1$

素因数の和:5939

約数の個数: 24

約数和(自身を含む): 34573824

約数和(自身を除く): 13624077

約数列:

[1, 3, 7, 13, 21, 39, 91, 169, 273, 507, 1183, 3549, 5903, 17709, 41321, 76739, 123963, 230217, 537173, 997607, 1611519, 2992821, 6983249, 20949747]

約数ペア:

[(1, 20949747), (3, 6983249), (7, 2992821), (13, 1611519), (21, 997607), (39, 537173), (91, 230217), (169, 123963), (273, 76739), (507, 41321), (1183, 17709), (3549, 5903)]