218561161

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{1523}}^1$

素因数の和:1645

約数の個数: 32

約数和(自身を含む): 286755840

約数和(自身を除く): 68194679

約数列:

[1, 7, 13, 19, 83, 91, 133, 247, 581, 1079, 1523, 1577, 1729, 7553, 10661, 11039, 19799, 20501, 28937, 126409, 138593, 143507, 202559, 376181, 884863, 1643317, 2401771, 2633267, 11503219, 16812397, 31223023, 218561161]

約数ペア:

[(1, 218561161), (7, 31223023), (13, 16812397), (19, 11503219), (83, 2633267), (91, 2401771), (133, 1643317), (247, 884863), (581, 376181), (1079, 202559), (1523, 143507), (1577, 138593), (1729, 126409), (7553, 28937), (10661, 20501), (11039, 19799)]