20666492

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{3947}}^1$

素因数の和:3986

約数の個数: 48

約数和(自身を含む): 47755008

約数和(自身を除く): 27088516

約数列:

[1, 2, 4, 7, 11, 14, 17, 22, 28, 34, 44, 68, 77, 119, 154, 187, 238, 308, 374, 476, 748, 1309, 2618, 3947, 5236, 7894, 15788, 27629, 43417, 55258, 67099, 86834, 110516, 134198, 173668, 268396, 303919, 469693, 607838, 738089, 939386, 1215676, 1476178, 1878772, 2952356, 5166623, 10333246, 20666492]

約数ペア:

[(1, 20666492), (2, 10333246), (4, 5166623), (7, 2952356), (11, 1878772), (14, 1476178), (17, 1215676), (22, 939386), (28, 738089), (34, 607838), (44, 469693), (68, 303919), (77, 268396), (119, 173668), (154, 134198), (187, 110516), (238, 86834), (308, 67099), (374, 55258), (476, 43417), (748, 27629), (1309, 15788), (2618, 7894), (3947, 5236)]