21119553

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{241}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 38054016

約数和(自身を除く): 16934463

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 107, 117, 241, 273, 321, 723, 749, 819, 963, 1391, 1687, 2169, 2247, 3133, 4173, 5061, 6741, 9399, 9737, 12519, 15183, 21931, 25787, 28197, 29211, 65793, 77361, 87633, 180509, 197379, 232083, 335231, 541527, 1005693, 1624581, 2346617, 3017079, 7039851, 21119553]

約数ペア:

[(1, 21119553), (3, 7039851), (7, 3017079), (9, 2346617), (13, 1624581), (21, 1005693), (39, 541527), (63, 335231), (91, 232083), (107, 197379), (117, 180509), (241, 87633), (273, 77361), (321, 65793), (723, 29211), (749, 28197), (819, 25787), (963, 21931), (1391, 15183), (1687, 12519), (2169, 9737), (2247, 9399), (3133, 6741), (4173, 5061)]