21165768

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^1\times {\mathrm{22613}}^1$

素因数の和:22638

約数の個数: 48

約数和(自身を含む): 61736220

約数和(自身を除く): 40570452

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 52, 72, 78, 104, 117, 156, 234, 312, 468, 936, 22613, 45226, 67839, 90452, 135678, 180904, 203517, 271356, 293969, 407034, 542712, 587938, 814068, 881907, 1175876, 1628136, 1763814, 2351752, 2645721, 3527628, 5291442, 7055256, 10582884, 21165768]

約数ペア:

[(1, 21165768), (2, 10582884), (3, 7055256), (4, 5291442), (6, 3527628), (8, 2645721), (9, 2351752), (12, 1763814), (13, 1628136), (18, 1175876), (24, 881907), (26, 814068), (36, 587938), (39, 542712), (52, 407034), (72, 293969), (78, 271356), (104, 203517), (117, 180904), (156, 135678), (234, 90452), (312, 67839), (468, 45226), (936, 22613)]