256880453740

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{857}}^1\times {\mathrm{651617}}^1$

素因数の和:652506

約数の個数: 48

約数和(自身を含む): 563560949952

約数和(自身を除く): 306680496212

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 857, 1714, 3428, 4285, 8570, 17140, 19711, 39422, 78844, 98555, 197110, 394220, 651617, 1303234, 2606468, 3258085, 6516170, 13032340, 14987191, 29974382, 59948764, 74935955, 149871910, 299743820, 558435769, 1116871538, 2233743076, 2792178845, 5584357690, 11168715380, 12844022687, 25688045374, 51376090748, 64220113435, 128440226870, 256880453740]

約数ペア:

[(1, 256880453740), (2, 128440226870), (4, 64220113435), (5, 51376090748), (10, 25688045374), (20, 12844022687), (23, 11168715380), (46, 5584357690), (92, 2792178845), (115, 2233743076), (230, 1116871538), (460, 558435769), (857, 299743820), (1714, 149871910), (3428, 74935955), (4285, 59948764), (8570, 29974382), (17140, 14987191), (19711, 13032340), (39422, 6516170), (78844, 3258085), (98555, 2606468), (197110, 1303234), (394220, 651617)]