291240208

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{136861}}^1$

素因数の和:136895

約数の個数: 40

約数和(自身を含む): 678835520

約数和(自身を除く): 387595312

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 76, 112, 133, 152, 266, 304, 532, 1064, 2128, 136861, 273722, 547444, 958027, 1094888, 1916054, 2189776, 2600359, 3832108, 5200718, 7664216, 10401436, 15328432, 18202513, 20802872, 36405026, 41605744, 72810052, 145620104, 291240208]

約数ペア:

[(1, 291240208), (2, 145620104), (4, 72810052), (7, 41605744), (8, 36405026), (14, 20802872), (16, 18202513), (19, 15328432), (28, 10401436), (38, 7664216), (56, 5200718), (76, 3832108), (112, 2600359), (133, 2189776), (152, 1916054), (266, 1094888), (304, 958027), (532, 547444), (1064, 273722), (2128, 136861)]