21000570650

素因数分解:

$2^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{94321}}^1$

素因数の和:94467

約数の個数: 48

約数和(自身を含む): 40245688248

約数和(自身を除く): 19245117598

約数列:

[1, 2, 5, 10, 25, 50, 61, 73, 122, 146, 305, 365, 610, 730, 1525, 1825, 3050, 3650, 4453, 8906, 22265, 44530, 94321, 111325, 188642, 222650, 471605, 943210, 2358025, 4716050, 5753581, 6885433, 11507162, 13770866, 28767905, 34427165, 57535810, 68854330, 143839525, 172135825, 287679050, 344271650, 420011413, 840022826, 2100057065, 4200114130, 10500285325, 21000570650]

約数ペア:

[(1, 21000570650), (2, 10500285325), (5, 4200114130), (10, 2100057065), (25, 840022826), (50, 420011413), (61, 344271650), (73, 287679050), (122, 172135825), (146, 143839525), (305, 68854330), (365, 57535810), (610, 34427165), (730, 28767905), (1525, 13770866), (1825, 11507162), (3050, 6885433), (3650, 5753581), (4453, 4716050), (8906, 2358025), (22265, 943210), (44530, 471605), (94321, 222650), (111325, 188642)]