278315193

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1\times {\mathrm{443}}^1$

素因数の和:729

約数の個数: 32

約数和(自身を含む): 407272320

約数和(自身を除く): 128957127

約数列:

[1, 3, 13, 39, 89, 181, 267, 443, 543, 1157, 1329, 2353, 3471, 5759, 7059, 16109, 17277, 39427, 48327, 80183, 118281, 209417, 240549, 512551, 628251, 1042379, 1537653, 3127137, 7136287, 21408861, 92771731, 278315193]

約数ペア:

[(1, 278315193), (3, 92771731), (13, 21408861), (39, 7136287), (89, 3127137), (181, 1537653), (267, 1042379), (443, 628251), (543, 512551), (1157, 240549), (1329, 209417), (2353, 118281), (3471, 80183), (5759, 48327), (7059, 39427), (16109, 17277)]