289690840

素因数分解:

$2^3\times 5^1\times {\mathrm{7242271}}^1$

素因数の和:7242282

約数の個数: 16

約数和(自身を含む): 651804480

約数和(自身を除く): 362113640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 7242271, 14484542, 28969084, 36211355, 57938168, 72422710, 144845420, 289690840]

約数ペア:

[(1, 289690840), (2, 144845420), (4, 72422710), (5, 57938168), (8, 36211355), (10, 28969084), (20, 14484542), (40, 7242271)]