17691920

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:232

約数の個数: 80

約数和(自身を含む): 43538880

約数和(自身を除く): 25846960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 43, 74, 80, 86, 139, 148, 172, 185, 215, 278, 296, 344, 370, 430, 556, 592, 688, 695, 740, 860, 1112, 1390, 1480, 1591, 1720, 2224, 2780, 2960, 3182, 3440, 5143, 5560, 5977, 6364, 7955, 10286, 11120, 11954, 12728, 15910, 20572, 23908, 25456, 25715, 29885, 31820, 41144, 47816, 51430, 59770, 63640, 82288, 95632, 102860, 119540, 127280, 205720, 221149, 239080, 411440, 442298, 478160, 884596, 1105745, 1769192, 2211490, 3538384, 4422980, 8845960, 17691920]

約数ペア:

[(1, 17691920), (2, 8845960), (4, 4422980), (5, 3538384), (8, 2211490), (10, 1769192), (16, 1105745), (20, 884596), (37, 478160), (40, 442298), (43, 411440), (74, 239080), (80, 221149), (86, 205720), (139, 127280), (148, 119540), (172, 102860), (185, 95632), (215, 82288), (278, 63640), (296, 59770), (344, 51430), (370, 47816), (430, 41144), (556, 31820), (592, 29885), (688, 25715), (695, 25456), (740, 23908), (860, 20572), (1112, 15910), (1390, 12728), (1480, 11954), (1591, 11120), (1720, 10286), (2224, 7955), (2780, 6364), (2960, 5977), (3182, 5560), (3440, 5143)]