21587450

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{233}}^1$

素因数の和:371

約数の個数: 48

約数和(自身を含む): 43088760

約数和(自身を除く): 21501310

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 109, 170, 218, 233, 425, 466, 545, 850, 1090, 1165, 1853, 2330, 2725, 3706, 3961, 5450, 5825, 7922, 9265, 11650, 18530, 19805, 25397, 39610, 46325, 50794, 92650, 99025, 126985, 198050, 253970, 431749, 634925, 863498, 1269850, 2158745, 4317490, 10793725, 21587450]

約数ペア:

[(1, 21587450), (2, 10793725), (5, 4317490), (10, 2158745), (17, 1269850), (25, 863498), (34, 634925), (50, 431749), (85, 253970), (109, 198050), (170, 126985), (218, 99025), (233, 92650), (425, 50794), (466, 46325), (545, 39610), (850, 25397), (1090, 19805), (1165, 18530), (1853, 11650), (2330, 9265), (2725, 7922), (3706, 5825), (3961, 5450)]