28779980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1801}}^1$

素因数の和:1874

約数の個数: 48

約数和(自身を含む): 65390976

約数和(自身を除く): 36610996

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 47, 68, 85, 94, 170, 188, 235, 340, 470, 799, 940, 1598, 1801, 3196, 3602, 3995, 7204, 7990, 9005, 15980, 18010, 30617, 36020, 61234, 84647, 122468, 153085, 169294, 306170, 338588, 423235, 612340, 846470, 1438999, 1692940, 2877998, 5755996, 7194995, 14389990, 28779980]

約数ペア:

[(1, 28779980), (2, 14389990), (4, 7194995), (5, 5755996), (10, 2877998), (17, 1692940), (20, 1438999), (34, 846470), (47, 612340), (68, 423235), (85, 338588), (94, 306170), (170, 169294), (188, 153085), (235, 122468), (340, 84647), (470, 61234), (799, 36020), (940, 30617), (1598, 18010), (1801, 15980), (3196, 9005), (3602, 7990), (3995, 7204)]