20447718477

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{263}}^1\times {\mathrm{488981}}^1$

素因数の和:489300

約数の個数: 16

約数和(自身を含む): 27883709568

約数和(自身を除く): 7435991091

約数列:

[1, 3, 53, 159, 263, 789, 13939, 41817, 488981, 1466943, 25915993, 77747979, 128602003, 385806009, 6815906159, 20447718477]

約数ペア:

[(1, 20447718477), (3, 6815906159), (53, 385806009), (159, 128602003), (263, 77747979), (789, 25915993), (13939, 1466943), (41817, 488981)]