67948420

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{439}}^1$

素因数の和:628

約数の個数: 48

約数和(自身を含む): 146361600

約数和(自身を除く): 78413180

約数列:

[1, 2, 4, 5, 10, 20, 71, 109, 142, 218, 284, 355, 436, 439, 545, 710, 878, 1090, 1420, 1756, 2180, 2195, 4390, 7739, 8780, 15478, 30956, 31169, 38695, 47851, 62338, 77390, 95702, 124676, 154780, 155845, 191404, 239255, 311690, 478510, 623380, 957020, 3397421, 6794842, 13589684, 16987105, 33974210, 67948420]

約数ペア:

[(1, 67948420), (2, 33974210), (4, 16987105), (5, 13589684), (10, 6794842), (20, 3397421), (71, 957020), (109, 623380), (142, 478510), (218, 311690), (284, 239255), (355, 191404), (436, 155845), (439, 154780), (545, 124676), (710, 95702), (878, 77390), (1090, 62338), (1420, 47851), (1756, 38695), (2180, 31169), (2195, 30956), (4390, 15478), (7739, 8780)]