21499683650

素因数分解:

$2^1\times 5^2\times {\mathrm{197}}^1\times {\mathrm{2182709}}^1$

素因数の和:2182918

約数の個数: 24

約数和(自身を含む): 40192421940

約数和(自身を除く): 18692738290

約数列:

[1, 2, 5, 10, 25, 50, 197, 394, 985, 1970, 4925, 9850, 2182709, 4365418, 10913545, 21827090, 54567725, 109135450, 429993673, 859987346, 2149968365, 4299936730, 10749841825, 21499683650]

約数ペア:

[(1, 21499683650), (2, 10749841825), (5, 4299936730), (10, 2149968365), (25, 859987346), (50, 429993673), (197, 109135450), (394, 54567725), (985, 21827090), (1970, 10913545), (4925, 4365418), (9850, 2182709)]