179968180

素因数分解:

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

素因数の和:881

約数の個数: 72

約数和(自身を含む): 441693000

約数和(自身を除く): 261724820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 409, 449, 490, 818, 898, 980, 1636, 1796, 2045, 2245, 2863, 3143, 4090, 4490, 5726, 6286, 8180, 8980, 11452, 12572, 14315, 15715, 20041, 22001, 28630, 31430, 40082, 44002, 57260, 62860, 80164, 88004, 100205, 110005, 183641, 200410, 220010, 367282, 400820, 440020, 734564, 918205, 1285487, 1836410, 2570974, 3672820, 5141948, 6427435, 8998409, 12854870, 17996818, 25709740, 35993636, 44992045, 89984090, 179968180]

約数ペア:

[(1, 179968180), (2, 89984090), (4, 44992045), (5, 35993636), (7, 25709740), (10, 17996818), (14, 12854870), (20, 8998409), (28, 6427435), (35, 5141948), (49, 3672820), (70, 2570974), (98, 1836410), (140, 1285487), (196, 918205), (245, 734564), (409, 440020), (449, 400820), (490, 367282), (818, 220010), (898, 200410), (980, 183641), (1636, 110005), (1796, 100205), (2045, 88004), (2245, 80164), (2863, 62860), (3143, 57260), (4090, 44002), (4490, 40082), (5726, 31430), (6286, 28630), (8180, 22001), (8980, 20041), (11452, 15715), (12572, 14315)]