21053816

素因数分解:

$2^3\times 7^1\times {\mathrm{79}}^1\times {\mathrm{4759}}^1$

素因数の和:4851

約数の個数: 32

約数和(自身を含む): 45696000

約数和(自身を除く): 24642184

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 79, 158, 316, 553, 632, 1106, 2212, 4424, 4759, 9518, 19036, 33313, 38072, 66626, 133252, 266504, 375961, 751922, 1503844, 2631727, 3007688, 5263454, 10526908, 21053816]

約数ペア:

[(1, 21053816), (2, 10526908), (4, 5263454), (7, 3007688), (8, 2631727), (14, 1503844), (28, 751922), (56, 375961), (79, 266504), (158, 133252), (316, 66626), (553, 38072), (632, 33313), (1106, 19036), (2212, 9518), (4424, 4759)]