20217350

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{191}}^1$

素因数の和:305

約数の個数: 48

約数和(自身を含む): 39640320

約数和(自身を除く): 19422970

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 73, 145, 146, 191, 290, 365, 382, 725, 730, 955, 1450, 1825, 1910, 2117, 3650, 4234, 4775, 5539, 9550, 10585, 11078, 13943, 21170, 27695, 27886, 52925, 55390, 69715, 105850, 138475, 139430, 276950, 348575, 404347, 697150, 808694, 2021735, 4043470, 10108675, 20217350]

約数ペア:

[(1, 20217350), (2, 10108675), (5, 4043470), (10, 2021735), (25, 808694), (29, 697150), (50, 404347), (58, 348575), (73, 276950), (145, 139430), (146, 138475), (191, 105850), (290, 69715), (365, 55390), (382, 52925), (725, 27886), (730, 27695), (955, 21170), (1450, 13943), (1825, 11078), (1910, 10585), (2117, 9550), (3650, 5539), (4234, 4775)]