19887426

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2297}}^1$

素因数の和:2355

約数の個数: 48

約数和(自身を含む): 47678904

約数和(自身を除く): 27791478

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 37, 39, 74, 78, 111, 117, 222, 234, 333, 481, 666, 962, 1443, 2297, 2886, 4329, 4594, 6891, 8658, 13782, 20673, 29861, 41346, 59722, 84989, 89583, 169978, 179166, 254967, 268749, 509934, 537498, 764901, 1104857, 1529802, 2209714, 3314571, 6629142, 9943713, 19887426]

約数ペア:

[(1, 19887426), (2, 9943713), (3, 6629142), (6, 3314571), (9, 2209714), (13, 1529802), (18, 1104857), (26, 764901), (37, 537498), (39, 509934), (74, 268749), (78, 254967), (111, 179166), (117, 169978), (222, 89583), (234, 84989), (333, 59722), (481, 41346), (666, 29861), (962, 20673), (1443, 13782), (2297, 8658), (2886, 6891), (4329, 4594)]