20628908

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{3823}}^1$

素因数の和:3917

約数の個数: 24

約数和(自身を含む): 38545920

約数和(自身を除く): 17917012

約数列:

[1, 2, 4, 19, 38, 71, 76, 142, 284, 1349, 2698, 3823, 5396, 7646, 15292, 72637, 145274, 271433, 290548, 542866, 1085732, 5157227, 10314454, 20628908]

約数ペア:

[(1, 20628908), (2, 10314454), (4, 5157227), (19, 1085732), (38, 542866), (71, 290548), (76, 271433), (142, 145274), (284, 72637), (1349, 15292), (2698, 7646), (3823, 5396)]