51787580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{487}}^1$

素因数の和:918

約数の個数: 48

約数和(自身を含む): 117647040

約数和(自身を除く): 65859460

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 409, 487, 818, 974, 1636, 1948, 2045, 2435, 4090, 4870, 5317, 6331, 8180, 9740, 10634, 12662, 21268, 25324, 26585, 31655, 53170, 63310, 106340, 126620, 199183, 398366, 796732, 995915, 1991830, 2589379, 3983660, 5178758, 10357516, 12946895, 25893790, 51787580]

約数ペア:

[(1, 51787580), (2, 25893790), (4, 12946895), (5, 10357516), (10, 5178758), (13, 3983660), (20, 2589379), (26, 1991830), (52, 995915), (65, 796732), (130, 398366), (260, 199183), (409, 126620), (487, 106340), (818, 63310), (974, 53170), (1636, 31655), (1948, 26585), (2045, 25324), (2435, 21268), (4090, 12662), (4870, 10634), (5317, 9740), (6331, 8180)]