18913908

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{461}}^1$

素因数の和:744

約数の個数: 48

約数和(自身を含む): 47811456

約数和(自身を除く): 28897548

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 263, 461, 526, 789, 922, 1052, 1383, 1578, 1844, 2766, 3156, 3419, 5532, 5993, 6838, 10257, 11986, 13676, 17979, 20514, 23972, 35958, 41028, 71916, 121243, 242486, 363729, 484972, 727458, 1454916, 1576159, 3152318, 4728477, 6304636, 9456954, 18913908]

約数ペア:

[(1, 18913908), (2, 9456954), (3, 6304636), (4, 4728477), (6, 3152318), (12, 1576159), (13, 1454916), (26, 727458), (39, 484972), (52, 363729), (78, 242486), (156, 121243), (263, 71916), (461, 41028), (526, 35958), (789, 23972), (922, 20514), (1052, 17979), (1383, 13676), (1578, 11986), (1844, 10257), (2766, 6838), (3156, 5993), (3419, 5532)]