289142721

素因数分解:

$3^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{68501}}^1$

素因数の和:68581

約数の個数: 24

約数和(自身を含む): 484446144

約数和(自身を除く): 195303423

約数列:

[1, 3, 7, 9, 21, 63, 67, 201, 469, 603, 1407, 4221, 68501, 205503, 479507, 616509, 1438521, 4315563, 4589567, 13768701, 32126969, 41306103, 96380907, 289142721]

約数ペア:

[(1, 289142721), (3, 96380907), (7, 41306103), (9, 32126969), (21, 13768701), (63, 4589567), (67, 4315563), (201, 1438521), (469, 616509), (603, 479507), (1407, 205503), (4221, 68501)]