21403928

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29401}}^1$

素因数の和:29427

約数の個数: 32

約数和(自身を含む): 49395360

約数和(自身を除く): 27991432

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 29401, 58802, 117604, 205807, 235208, 382213, 411614, 764426, 823228, 1528852, 1646456, 2675491, 3057704, 5350982, 10701964, 21403928]

約数ペア:

[(1, 21403928), (2, 10701964), (4, 5350982), (7, 3057704), (8, 2675491), (13, 1646456), (14, 1528852), (26, 823228), (28, 764426), (52, 411614), (56, 382213), (91, 235208), (104, 205807), (182, 117604), (364, 58802), (728, 29401)]