199904140

素因数分解:

$2^2\times 5^1\times {\mathrm{331}}^1\times {\mathrm{30197}}^1$

素因数の和:30537

約数の個数: 24

約数和(自身を含む): 421080912

約数和(自身を除く): 221176772

約数列:

[1, 2, 4, 5, 10, 20, 331, 662, 1324, 1655, 3310, 6620, 30197, 60394, 120788, 150985, 301970, 603940, 9995207, 19990414, 39980828, 49976035, 99952070, 199904140]

約数ペア:

[(1, 199904140), (2, 99952070), (4, 49976035), (5, 39980828), (10, 19990414), (20, 9995207), (331, 603940), (662, 301970), (1324, 150985), (1655, 120788), (3310, 60394), (6620, 30197)]