28807640

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{8677}}^1$

素因数の和:8771

約数の個数: 32

約数和(自身を含む): 65605680

約数和(自身を除く): 36798040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 8677, 17354, 34708, 43385, 69416, 86770, 173540, 347080, 720191, 1440382, 2880764, 3600955, 5761528, 7201910, 14403820, 28807640]

約数ペア:

[(1, 28807640), (2, 14403820), (4, 7201910), (5, 5761528), (8, 3600955), (10, 2880764), (20, 1440382), (40, 720191), (83, 347080), (166, 173540), (332, 86770), (415, 69416), (664, 43385), (830, 34708), (1660, 17354), (3320, 8677)]