20660380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{347}}^1$

素因数の和:598

約数の個数: 48

約数和(自身を含む): 47063520

約数和(自身を除く): 26403140

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 229, 260, 347, 458, 694, 916, 1145, 1388, 1735, 2290, 2977, 3470, 4511, 4580, 5954, 6940, 9022, 11908, 14885, 18044, 22555, 29770, 45110, 59540, 79463, 90220, 158926, 317852, 397315, 794630, 1033019, 1589260, 2066038, 4132076, 5165095, 10330190, 20660380]

約数ペア:

[(1, 20660380), (2, 10330190), (4, 5165095), (5, 4132076), (10, 2066038), (13, 1589260), (20, 1033019), (26, 794630), (52, 397315), (65, 317852), (130, 158926), (229, 90220), (260, 79463), (347, 59540), (458, 45110), (694, 29770), (916, 22555), (1145, 18044), (1388, 14885), (1735, 11908), (2290, 9022), (2977, 6940), (3470, 5954), (4511, 4580)]