19618960

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{1931}}^1$

素因数の和:2071

約数の個数: 40

約数和(自身を含む): 45997056

約数和(自身を除く): 26378096

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 1931, 2032, 2540, 3862, 5080, 7724, 9655, 10160, 15448, 19310, 30896, 38620, 77240, 154480, 245237, 490474, 980948, 1226185, 1961896, 2452370, 3923792, 4904740, 9809480, 19618960]

約数ペア:

[(1, 19618960), (2, 9809480), (4, 4904740), (5, 3923792), (8, 2452370), (10, 1961896), (16, 1226185), (20, 980948), (40, 490474), (80, 245237), (127, 154480), (254, 77240), (508, 38620), (635, 30896), (1016, 19310), (1270, 15448), (1931, 10160), (2032, 9655), (2540, 7724), (3862, 5080)]