11988940

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{317}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 26498304

約数和(自身を除く): 14509364

約数列:

[1, 2, 4, 5, 10, 20, 31, 61, 62, 122, 124, 155, 244, 305, 310, 317, 610, 620, 634, 1220, 1268, 1585, 1891, 3170, 3782, 6340, 7564, 9455, 9827, 18910, 19337, 19654, 37820, 38674, 39308, 49135, 77348, 96685, 98270, 193370, 196540, 386740, 599447, 1198894, 2397788, 2997235, 5994470, 11988940]

約数ペア:

[(1, 11988940), (2, 5994470), (4, 2997235), (5, 2397788), (10, 1198894), (20, 599447), (31, 386740), (61, 196540), (62, 193370), (122, 98270), (124, 96685), (155, 77348), (244, 49135), (305, 39308), (310, 38674), (317, 37820), (610, 19654), (620, 19337), (634, 18910), (1220, 9827), (1268, 9455), (1585, 7564), (1891, 6340), (3170, 3782)]