19997240

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{17239}}^1$

素因数の和:17279

約数の個数: 32

約数和(自身を含む): 46548000

約数和(自身を除く): 26550760

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 17239, 34478, 68956, 86195, 137912, 172390, 344780, 499931, 689560, 999862, 1999724, 2499655, 3999448, 4999310, 9998620, 19997240]

約数ペア:

[(1, 19997240), (2, 9998620), (4, 4999310), (5, 3999448), (8, 2499655), (10, 1999724), (20, 999862), (29, 689560), (40, 499931), (58, 344780), (116, 172390), (145, 137912), (232, 86195), (290, 68956), (580, 34478), (1160, 17239)]