21092440

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{3539}}^1$

素因数の和:3699

約数の個数: 32

約数和(自身を含む): 47790000

約数和(自身を除く): 26697560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 596, 745, 1192, 1490, 2980, 3539, 5960, 7078, 14156, 17695, 28312, 35390, 70780, 141560, 527311, 1054622, 2109244, 2636555, 4218488, 5273110, 10546220, 21092440]

約数ペア:

[(1, 21092440), (2, 10546220), (4, 5273110), (5, 4218488), (8, 2636555), (10, 2109244), (20, 1054622), (40, 527311), (149, 141560), (298, 70780), (596, 35390), (745, 28312), (1192, 17695), (1490, 14156), (2980, 7078), (3539, 5960)]