19926620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{317}}^1\times {\mathrm{449}}^1$

素因数の和:782

約数の個数: 48

約数和(自身を含む): 48081600

約数和(自身を除く): 28154980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 317, 449, 634, 898, 1268, 1585, 1796, 2219, 2245, 3143, 3170, 4438, 4490, 6286, 6340, 8876, 8980, 11095, 12572, 15715, 22190, 31430, 44380, 62860, 142333, 284666, 569332, 711665, 996331, 1423330, 1992662, 2846660, 3985324, 4981655, 9963310, 19926620]

約数ペア:

[(1, 19926620), (2, 9963310), (4, 4981655), (5, 3985324), (7, 2846660), (10, 1992662), (14, 1423330), (20, 996331), (28, 711665), (35, 569332), (70, 284666), (140, 142333), (317, 62860), (449, 44380), (634, 31430), (898, 22190), (1268, 15715), (1585, 12572), (1796, 11095), (2219, 8980), (2245, 8876), (3143, 6340), (3170, 6286), (4438, 4490)]