21000340855

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{197}}^1\times {\mathrm{10861}}^1$

素因数の和:11227

約数の個数: 32

約数和(自身を含む): 27459831168

約数和(自身を除く): 6459490313

約数列:

[1, 5, 13, 65, 151, 197, 755, 985, 1963, 2561, 9815, 10861, 12805, 29747, 54305, 141193, 148735, 386711, 705965, 1640011, 1933555, 2139617, 8200055, 10698085, 21320143, 27815021, 106600715, 139075105, 323082167, 1615410835, 4200068171, 21000340855]

約数ペア:

[(1, 21000340855), (5, 4200068171), (13, 1615410835), (65, 323082167), (151, 139075105), (197, 106600715), (755, 27815021), (985, 21320143), (1963, 10698085), (2561, 8200055), (9815, 2139617), (10861, 1933555), (12805, 1640011), (29747, 705965), (54305, 386711), (141193, 148735)]