21204984

素因数分解:

$2^3\times 3^1\times {\mathrm{17}}^1\times {\mathrm{51973}}^1$

素因数の和:51999

約数の個数: 32

約数和(自身を含む): 56131920

約数和(自身を除く): 34926936

約数列:

[1, 2, 3, 4, 6, 8, 12, 17, 24, 34, 51, 68, 102, 136, 204, 408, 51973, 103946, 155919, 207892, 311838, 415784, 623676, 883541, 1247352, 1767082, 2650623, 3534164, 5301246, 7068328, 10602492, 21204984]

約数ペア:

[(1, 21204984), (2, 10602492), (3, 7068328), (4, 5301246), (6, 3534164), (8, 2650623), (12, 1767082), (17, 1247352), (24, 883541), (34, 623676), (51, 415784), (68, 311838), (102, 207892), (136, 155919), (204, 103946), (408, 51973)]