21407265

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{733}}^1$

素因数の和:814

約数の個数: 48

約数和(自身を含む): 41221440

約数和(自身を除く): 19814175

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 59, 99, 165, 177, 295, 495, 531, 649, 733, 885, 1947, 2199, 2655, 3245, 3665, 5841, 6597, 8063, 9735, 10995, 24189, 29205, 32985, 40315, 43247, 72567, 120945, 129741, 216235, 362835, 389223, 475717, 648705, 1427151, 1946115, 2378585, 4281453, 7135755, 21407265]

約数ペア:

[(1, 21407265), (3, 7135755), (5, 4281453), (9, 2378585), (11, 1946115), (15, 1427151), (33, 648705), (45, 475717), (55, 389223), (59, 362835), (99, 216235), (165, 129741), (177, 120945), (295, 72567), (495, 43247), (531, 40315), (649, 32985), (733, 29205), (885, 24189), (1947, 10995), (2199, 9735), (2655, 8063), (3245, 6597), (3665, 5841)]