19662520

素因数分解:

$2^3\times 5^1\times {\mathrm{379}}^1\times {\mathrm{1297}}^1$

素因数の和:1687

約数の個数: 32

約数和(自身を含む): 44391600

約数和(自身を除く): 24729080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 379, 758, 1297, 1516, 1895, 2594, 3032, 3790, 5188, 6485, 7580, 10376, 12970, 15160, 25940, 51880, 491563, 983126, 1966252, 2457815, 3932504, 4915630, 9831260, 19662520]

約数ペア:

[(1, 19662520), (2, 9831260), (4, 4915630), (5, 3932504), (8, 2457815), (10, 1966252), (20, 983126), (40, 491563), (379, 51880), (758, 25940), (1297, 15160), (1516, 12970), (1895, 10376), (2594, 7580), (3032, 6485), (3790, 5188)]