21143480

素因数分解:

$2^3\times 5^1\times {\mathrm{179}}^1\times {\mathrm{2953}}^1$

素因数の和:3143

約数の個数: 32

約数和(自身を含む): 47854800

約数和(自身を除く): 26711320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 179, 358, 716, 895, 1432, 1790, 2953, 3580, 5906, 7160, 11812, 14765, 23624, 29530, 59060, 118120, 528587, 1057174, 2114348, 2642935, 4228696, 5285870, 10571740, 21143480]

約数ペア:

[(1, 21143480), (2, 10571740), (4, 5285870), (5, 4228696), (8, 2642935), (10, 2114348), (20, 1057174), (40, 528587), (179, 118120), (358, 59060), (716, 29530), (895, 23624), (1432, 14765), (1790, 11812), (2953, 7160), (3580, 5906)]