21000343385

素因数分解:

$5^1\times 7^1\times {\mathrm{487}}^1\times {\mathrm{691}}^1\times {\mathrm{1783}}^1$

素因数の和:2973

約数の個数: 32

約数和(自身を含む): 28917583872

約数和(自身を除く): 7917240487

約数列:

[1, 5, 7, 35, 487, 691, 1783, 2435, 3409, 3455, 4837, 8915, 12481, 17045, 24185, 62405, 336517, 868321, 1232053, 1682585, 2355619, 4341605, 6078247, 6160265, 8624371, 11778095, 30391235, 43121855, 600009811, 3000049055, 4200068677, 21000343385]

約数ペア:

[(1, 21000343385), (5, 4200068677), (7, 3000049055), (35, 600009811), (487, 43121855), (691, 30391235), (1783, 11778095), (2435, 8624371), (3409, 6160265), (3455, 6078247), (4837, 4341605), (8915, 2355619), (12481, 1682585), (17045, 1232053), (24185, 868321), (62405, 336517)]