25709740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{409}}^1\times {\mathrm{449}}^1$

素因数の和:874

約数の個数: 48

約数和(自身を含む): 61992000

約数和(自身を除く): 36282260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 409, 449, 818, 898, 1636, 1796, 2045, 2245, 2863, 3143, 4090, 4490, 5726, 6286, 8180, 8980, 11452, 12572, 14315, 15715, 28630, 31430, 57260, 62860, 183641, 367282, 734564, 918205, 1285487, 1836410, 2570974, 3672820, 5141948, 6427435, 12854870, 25709740]

約数ペア:

[(1, 25709740), (2, 12854870), (4, 6427435), (5, 5141948), (7, 3672820), (10, 2570974), (14, 1836410), (20, 1285487), (28, 918205), (35, 734564), (70, 367282), (140, 183641), (409, 62860), (449, 57260), (818, 31430), (898, 28630), (1636, 15715), (1796, 14315), (2045, 12572), (2245, 11452), (2863, 8980), (3143, 8180), (4090, 6286), (4490, 5726)]