20539684

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{311}}^1$

素因数の和:424

約数の個数: 48

約数和(自身を含む): 41932800

約数和(自身を除く): 21393116

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 79, 158, 209, 311, 316, 418, 622, 836, 869, 1244, 1501, 1738, 3002, 3421, 3476, 5909, 6004, 6842, 11818, 13684, 16511, 23636, 24569, 33022, 49138, 64999, 66044, 98276, 129998, 259996, 270259, 466811, 540518, 933622, 1081036, 1867244, 5134921, 10269842, 20539684]

約数ペア:

[(1, 20539684), (2, 10269842), (4, 5134921), (11, 1867244), (19, 1081036), (22, 933622), (38, 540518), (44, 466811), (76, 270259), (79, 259996), (158, 129998), (209, 98276), (311, 66044), (316, 64999), (418, 49138), (622, 33022), (836, 24569), (869, 23636), (1244, 16511), (1501, 13684), (1738, 11818), (3002, 6842), (3421, 6004), (3476, 5909)]