10891280

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1249}}^1$

素因数の和:1371

約数の個数: 40

約数和(自身を含む): 25575000

約数和(自身を除く): 14683720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1249, 1744, 2180, 2498, 4360, 4996, 6245, 8720, 9992, 12490, 19984, 24980, 49960, 99920, 136141, 272282, 544564, 680705, 1089128, 1361410, 2178256, 2722820, 5445640, 10891280]

約数ペア:

[(1, 10891280), (2, 5445640), (4, 2722820), (5, 2178256), (8, 1361410), (10, 1089128), (16, 680705), (20, 544564), (40, 272282), (80, 136141), (109, 99920), (218, 49960), (436, 24980), (545, 19984), (872, 12490), (1090, 9992), (1249, 8720), (1744, 6245), (2180, 4996), (2498, 4360)]