21131448

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{761}}^1$

素因数の和:872

約数の個数: 64

約数和(自身を含む): 57607200

約数和(自身を除く): 36475752

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 89, 104, 156, 178, 267, 312, 356, 534, 712, 761, 1068, 1157, 1522, 2136, 2283, 2314, 3044, 3471, 4566, 4628, 6088, 6942, 9132, 9256, 9893, 13884, 18264, 19786, 27768, 29679, 39572, 59358, 67729, 79144, 118716, 135458, 203187, 237432, 270916, 406374, 541832, 812748, 880477, 1625496, 1760954, 2641431, 3521908, 5282862, 7043816, 10565724, 21131448]

約数ペア:

[(1, 21131448), (2, 10565724), (3, 7043816), (4, 5282862), (6, 3521908), (8, 2641431), (12, 1760954), (13, 1625496), (24, 880477), (26, 812748), (39, 541832), (52, 406374), (78, 270916), (89, 237432), (104, 203187), (156, 135458), (178, 118716), (267, 79144), (312, 67729), (356, 59358), (534, 39572), (712, 29679), (761, 27768), (1068, 19786), (1157, 18264), (1522, 13884), (2136, 9893), (2283, 9256), (2314, 9132), (3044, 6942), (3471, 6088), (4566, 4628)]