28381120

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2861}}^1$

素因数の和:2909

約数の個数: 56

約数和(自身を含む): 69787008

約数和(自身を除く): 41405888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2480, 2861, 4960, 5722, 9920, 11444, 14305, 22888, 28610, 45776, 57220, 88691, 91552, 114440, 177382, 183104, 228880, 354764, 443455, 457760, 709528, 886910, 915520, 1419056, 1773820, 2838112, 3547640, 5676224, 7095280, 14190560, 28381120]

約数ペア:

[(1, 28381120), (2, 14190560), (4, 7095280), (5, 5676224), (8, 3547640), (10, 2838112), (16, 1773820), (20, 1419056), (31, 915520), (32, 886910), (40, 709528), (62, 457760), (64, 443455), (80, 354764), (124, 228880), (155, 183104), (160, 177382), (248, 114440), (310, 91552), (320, 88691), (496, 57220), (620, 45776), (992, 28610), (1240, 22888), (1984, 14305), (2480, 11444), (2861, 9920), (4960, 5722)]