20986728

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{2357}}^1$

素因数の和:2426

約数の個数: 64

約数和(自身を含む): 61119360

約数和(自身を除く): 40132632

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 53, 56, 84, 106, 159, 168, 212, 318, 371, 424, 636, 742, 1113, 1272, 1484, 2226, 2357, 2968, 4452, 4714, 7071, 8904, 9428, 14142, 16499, 18856, 28284, 32998, 49497, 56568, 65996, 98994, 124921, 131992, 197988, 249842, 374763, 395976, 499684, 749526, 874447, 999368, 1499052, 1748894, 2623341, 2998104, 3497788, 5246682, 6995576, 10493364, 20986728]

約数ペア:

[(1, 20986728), (2, 10493364), (3, 6995576), (4, 5246682), (6, 3497788), (7, 2998104), (8, 2623341), (12, 1748894), (14, 1499052), (21, 999368), (24, 874447), (28, 749526), (42, 499684), (53, 395976), (56, 374763), (84, 249842), (106, 197988), (159, 131992), (168, 124921), (212, 98994), (318, 65996), (371, 56568), (424, 49497), (636, 32998), (742, 28284), (1113, 18856), (1272, 16499), (1484, 14142), (2226, 9428), (2357, 8904), (2968, 7071), (4452, 4714)]