19883188

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{439}}^1$

素因数の和:536

約数の個数: 36

約数和(自身を含む): 38327520

約数和(自身を除く): 18444332

約数列:

[1, 2, 4, 13, 26, 52, 67, 134, 169, 268, 338, 439, 676, 871, 878, 1742, 1756, 3484, 5707, 11323, 11414, 22646, 22828, 29413, 45292, 58826, 74191, 117652, 148382, 296764, 382369, 764738, 1529476, 4970797, 9941594, 19883188]

約数ペア:

[(1, 19883188), (2, 9941594), (4, 4970797), (13, 1529476), (26, 764738), (52, 382369), (67, 296764), (134, 148382), (169, 117652), (268, 74191), (338, 58826), (439, 45292), (676, 29413), (871, 22828), (878, 22646), (1742, 11414), (1756, 11323), (3484, 5707)]