20910778

素因数分解:

$2^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{193}}^1$

素因数の和:382

約数の個数: 32

約数和(自身を含む): 36875520

約数和(自身を除く): 15964742

約数列:

[1, 2, 7, 14, 71, 109, 142, 193, 218, 386, 497, 763, 994, 1351, 1526, 2702, 7739, 13703, 15478, 21037, 27406, 42074, 54173, 95921, 108346, 147259, 191842, 294518, 1493627, 2987254, 10455389, 20910778]

約数ペア:

[(1, 20910778), (2, 10455389), (7, 2987254), (14, 1493627), (71, 294518), (109, 191842), (142, 147259), (193, 108346), (218, 95921), (386, 54173), (497, 42074), (763, 27406), (994, 21037), (1351, 15478), (1526, 13703), (2702, 7739)]