21068440

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30983}}^1$

素因数の和:31011

約数の個数: 32

約数和(自身を含む): 50194080

約数和(自身を除く): 29125640

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30983, 61966, 123932, 154915, 247864, 309830, 526711, 619660, 1053422, 1239320, 2106844, 2633555, 4213688, 5267110, 10534220, 21068440]

約数ペア:

[(1, 21068440), (2, 10534220), (4, 5267110), (5, 4213688), (8, 2633555), (10, 2106844), (17, 1239320), (20, 1053422), (34, 619660), (40, 526711), (68, 309830), (85, 247864), (136, 154915), (170, 123932), (340, 61966), (680, 30983)]