28351540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{313}}^1\times {\mathrm{647}}^1$

素因数の和:976

約数の個数: 48

約数和(自身を含む): 68366592

約数和(自身を除く): 40015052

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 313, 626, 647, 1252, 1294, 1565, 2191, 2588, 3130, 3235, 4382, 4529, 6260, 6470, 8764, 9058, 10955, 12940, 18116, 21910, 22645, 43820, 45290, 90580, 202511, 405022, 810044, 1012555, 1417577, 2025110, 2835154, 4050220, 5670308, 7087885, 14175770, 28351540]

約数ペア:

[(1, 28351540), (2, 14175770), (4, 7087885), (5, 5670308), (7, 4050220), (10, 2835154), (14, 2025110), (20, 1417577), (28, 1012555), (35, 810044), (70, 405022), (140, 202511), (313, 90580), (626, 45290), (647, 43820), (1252, 22645), (1294, 21910), (1565, 18116), (2191, 12940), (2588, 10955), (3130, 9058), (3235, 8764), (4382, 6470), (4529, 6260)]