19666000

素因数分解:

$2^4\times 5^3\times {\mathrm{9833}}^1$

素因数の和:9856

約数の個数: 40

約数和(自身を含む): 47557224

約数和(自身を除く): 27891224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 9833, 19666, 39332, 49165, 78664, 98330, 157328, 196660, 245825, 393320, 491650, 786640, 983300, 1229125, 1966600, 2458250, 3933200, 4916500, 9833000, 19666000]

約数ペア:

[(1, 19666000), (2, 9833000), (4, 4916500), (5, 3933200), (8, 2458250), (10, 1966600), (16, 1229125), (20, 983300), (25, 786640), (40, 491650), (50, 393320), (80, 245825), (100, 196660), (125, 157328), (200, 98330), (250, 78664), (400, 49165), (500, 39332), (1000, 19666), (2000, 9833)]