21184040

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31153}}^1$

素因数の和:31181

約数の個数: 32

約数和(自身を含む): 50469480

約数和(自身を除く): 29285440

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 31153, 62306, 124612, 155765, 249224, 311530, 529601, 623060, 1059202, 1246120, 2118404, 2648005, 4236808, 5296010, 10592020, 21184040]

約数ペア:

[(1, 21184040), (2, 10592020), (4, 5296010), (5, 4236808), (8, 2648005), (10, 2118404), (17, 1246120), (20, 1059202), (34, 623060), (40, 529601), (68, 311530), (85, 249224), (136, 155765), (170, 124612), (340, 62306), (680, 31153)]