21898275

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{787}}^1$

素因数の和:860

約数の個数: 48

約数和(自身を含む): 42211584

約数和(自身を除く): 20313309

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 53, 75, 105, 159, 175, 265, 371, 525, 787, 795, 1113, 1325, 1855, 2361, 3935, 3975, 5509, 5565, 9275, 11805, 16527, 19675, 27545, 27825, 41711, 59025, 82635, 125133, 137725, 208555, 291977, 413175, 625665, 875931, 1042775, 1459885, 3128325, 4379655, 7299425, 21898275]

約数ペア:

[(1, 21898275), (3, 7299425), (5, 4379655), (7, 3128325), (15, 1459885), (21, 1042775), (25, 875931), (35, 625665), (53, 413175), (75, 291977), (105, 208555), (159, 137725), (175, 125133), (265, 82635), (371, 59025), (525, 41711), (787, 27825), (795, 27545), (1113, 19675), (1325, 16527), (1855, 11805), (2361, 9275), (3935, 5565), (3975, 5509)]