21740642

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1787}}^1$

素因数の和:1886

約数の個数: 32

約数和(自身を含む): 41195520

約数和(自身を除く): 19454878

約数列:

[1, 2, 7, 11, 14, 22, 77, 79, 154, 158, 553, 869, 1106, 1738, 1787, 3574, 6083, 12166, 12509, 19657, 25018, 39314, 137599, 141173, 275198, 282346, 988211, 1552903, 1976422, 3105806, 10870321, 21740642]

約数ペア:

[(1, 21740642), (2, 10870321), (7, 3105806), (11, 1976422), (14, 1552903), (22, 988211), (77, 282346), (79, 275198), (154, 141173), (158, 137599), (553, 39314), (869, 25018), (1106, 19657), (1738, 12509), (1787, 12166), (3574, 6083)]