208989880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{474977}}^1$

素因数の和:474999

約数の個数: 32

約数和(自身を含む): 512976240

約数和(自身を除く): 303986360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 474977, 949954, 1899908, 2374885, 3799816, 4749770, 5224747, 9499540, 10449494, 18999080, 20898988, 26123735, 41797976, 52247470, 104494940, 208989880]

約数ペア:

[(1, 208989880), (2, 104494940), (4, 52247470), (5, 41797976), (8, 26123735), (10, 20898988), (11, 18999080), (20, 10449494), (22, 9499540), (40, 5224747), (44, 4749770), (55, 3799816), (88, 2374885), (110, 1899908), (220, 949954), (440, 474977)]