128548700

素因数分解:

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

素因数の和:879

約数の個数: 72

約数和(自身を含む): 320292000

約数和(自身を除く): 191743300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 350, 409, 449, 700, 818, 898, 1636, 1796, 2045, 2245, 2863, 3143, 4090, 4490, 5726, 6286, 8180, 8980, 10225, 11225, 11452, 12572, 14315, 15715, 20450, 22450, 28630, 31430, 40900, 44900, 57260, 62860, 71575, 78575, 143150, 157150, 183641, 286300, 314300, 367282, 734564, 918205, 1285487, 1836410, 2570974, 3672820, 4591025, 5141948, 6427435, 9182050, 12854870, 18364100, 25709740, 32137175, 64274350, 128548700]

約数ペア:

[(1, 128548700), (2, 64274350), (4, 32137175), (5, 25709740), (7, 18364100), (10, 12854870), (14, 9182050), (20, 6427435), (25, 5141948), (28, 4591025), (35, 3672820), (50, 2570974), (70, 1836410), (100, 1285487), (140, 918205), (175, 734564), (350, 367282), (409, 314300), (449, 286300), (700, 183641), (818, 157150), (898, 143150), (1636, 78575), (1796, 71575), (2045, 62860), (2245, 57260), (2863, 44900), (3143, 40900), (4090, 31430), (4490, 28630), (5726, 22450), (6286, 20450), (8180, 15715), (8980, 14315), (10225, 12572), (11225, 11452)]