21791746

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:330

約数の個数: 32

約数和(自身を含む): 35925120

約数和(自身を除く): 14133374

約数列:

[1, 2, 19, 38, 41, 71, 82, 142, 197, 394, 779, 1349, 1558, 2698, 2911, 3743, 5822, 7486, 8077, 13987, 16154, 27974, 55309, 110618, 153463, 265753, 306926, 531506, 573467, 1146934, 10895873, 21791746]

約数ペア:

[(1, 21791746), (2, 10895873), (19, 1146934), (38, 573467), (41, 531506), (71, 306926), (82, 265753), (142, 153463), (197, 110618), (394, 55309), (779, 27974), (1349, 16154), (1558, 13987), (2698, 8077), (2911, 7486), (3743, 5822)]