720943940

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{233}}^1\times {\mathrm{2179}}^1$

素因数の和:2492

約数の個数: 48

約数和(自身を含む): 1542602880

約数和(自身を除く): 821658940

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 233, 284, 355, 466, 710, 932, 1165, 1420, 2179, 2330, 4358, 4660, 8716, 10895, 16543, 21790, 33086, 43580, 66172, 82715, 154709, 165430, 309418, 330860, 507707, 618836, 773545, 1015414, 1547090, 2030828, 2538535, 3094180, 5077070, 10154140, 36047197, 72094394, 144188788, 180235985, 360471970, 720943940]

約数ペア:

[(1, 720943940), (2, 360471970), (4, 180235985), (5, 144188788), (10, 72094394), (20, 36047197), (71, 10154140), (142, 5077070), (233, 3094180), (284, 2538535), (355, 2030828), (466, 1547090), (710, 1015414), (932, 773545), (1165, 618836), (1420, 507707), (2179, 330860), (2330, 309418), (4358, 165430), (4660, 154709), (8716, 82715), (10895, 66172), (16543, 43580), (21790, 33086)]