21156538

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{379}}^1$

素因数の和:526

約数の個数: 32

約数和(自身を含む): 36388800

約数和(自身を除く): 15232262

約数列:

[1, 2, 13, 19, 26, 38, 113, 226, 247, 379, 494, 758, 1469, 2147, 2938, 4294, 4927, 7201, 9854, 14402, 27911, 42827, 55822, 85654, 93613, 187226, 556751, 813713, 1113502, 1627426, 10578269, 21156538]

約数ペア:

[(1, 21156538), (2, 10578269), (13, 1627426), (19, 1113502), (26, 813713), (38, 556751), (113, 187226), (226, 93613), (247, 85654), (379, 55822), (494, 42827), (758, 27911), (1469, 14402), (2147, 9854), (2938, 7201), (4294, 4927)]