18881728

素因数分解:

$2^6\times {\mathrm{31}}^2\times {\mathrm{307}}^1$

素因数の和:381

約数の個数: 42

約数和(自身を含む): 38842188

約数和(自身を除く): 19960460

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 248, 307, 496, 614, 961, 992, 1228, 1922, 1984, 2456, 3844, 4912, 7688, 9517, 9824, 15376, 19034, 19648, 30752, 38068, 61504, 76136, 152272, 295027, 304544, 590054, 609088, 1180108, 2360216, 4720432, 9440864, 18881728]

約数ペア:

[(1, 18881728), (2, 9440864), (4, 4720432), (8, 2360216), (16, 1180108), (31, 609088), (32, 590054), (62, 304544), (64, 295027), (124, 152272), (248, 76136), (307, 61504), (496, 38068), (614, 30752), (961, 19648), (992, 19034), (1228, 15376), (1922, 9824), (1984, 9517), (2456, 7688), (3844, 4912)]