28764940

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{431}}^1$

素因数の和:558

約数の個数: 48

約数和(自身を含む): 62705664

約数和(自身を除く): 33940724

約数列:

[1, 2, 4, 5, 10, 20, 47, 71, 94, 142, 188, 235, 284, 355, 431, 470, 710, 862, 940, 1420, 1724, 2155, 3337, 4310, 6674, 8620, 13348, 16685, 20257, 30601, 33370, 40514, 61202, 66740, 81028, 101285, 122404, 153005, 202570, 306010, 405140, 612020, 1438247, 2876494, 5752988, 7191235, 14382470, 28764940]

約数ペア:

[(1, 28764940), (2, 14382470), (4, 7191235), (5, 5752988), (10, 2876494), (20, 1438247), (47, 612020), (71, 405140), (94, 306010), (142, 202570), (188, 153005), (235, 122404), (284, 101285), (355, 81028), (431, 66740), (470, 61202), (710, 40514), (862, 33370), (940, 30601), (1420, 20257), (1724, 16685), (2155, 13348), (3337, 8620), (4310, 6674)]