21440055

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1$

素因数の和:280

約数の個数: 64

約数和(自身を含む): 42900480

約数和(自身を除く): 21460425

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 113, 139, 195, 273, 339, 417, 455, 565, 695, 791, 973, 1365, 1469, 1695, 1807, 2085, 2373, 2919, 3955, 4407, 4865, 5421, 7345, 9035, 10283, 11865, 12649, 14595, 15707, 22035, 27105, 30849, 37947, 47121, 51415, 63245, 78535, 109949, 154245, 189735, 204191, 235605, 329847, 549745, 612573, 1020955, 1429337, 1649235, 3062865, 4288011, 7146685, 21440055]

約数ペア:

[(1, 21440055), (3, 7146685), (5, 4288011), (7, 3062865), (13, 1649235), (15, 1429337), (21, 1020955), (35, 612573), (39, 549745), (65, 329847), (91, 235605), (105, 204191), (113, 189735), (139, 154245), (195, 109949), (273, 78535), (339, 63245), (417, 51415), (455, 47121), (565, 37947), (695, 30849), (791, 27105), (973, 22035), (1365, 15707), (1469, 14595), (1695, 12649), (1807, 11865), (2085, 10283), (2373, 9035), (2919, 7345), (3955, 5421), (4407, 4865)]