18996620

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{677}}^1$

素因数の和:770

約数の個数: 48

約数和(自身を含む): 42372288

約数和(自身を除く): 23375668

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 61, 92, 115, 122, 230, 244, 305, 460, 610, 677, 1220, 1354, 1403, 2708, 2806, 3385, 5612, 6770, 7015, 13540, 14030, 15571, 28060, 31142, 41297, 62284, 77855, 82594, 155710, 165188, 206485, 311420, 412970, 825940, 949831, 1899662, 3799324, 4749155, 9498310, 18996620]

約数ペア:

[(1, 18996620), (2, 9498310), (4, 4749155), (5, 3799324), (10, 1899662), (20, 949831), (23, 825940), (46, 412970), (61, 311420), (92, 206485), (115, 165188), (122, 155710), (230, 82594), (244, 77855), (305, 62284), (460, 41297), (610, 31142), (677, 28060), (1220, 15571), (1354, 14030), (1403, 13540), (2708, 7015), (2806, 6770), (3385, 5612)]