16989880

素因数分解:

$2^3\times 5^1\times {\mathrm{383}}^1\times {\mathrm{1109}}^1$

素因数の和:1503

約数の個数: 32

約数和(自身を含む): 38361600

約数和(自身を除く): 21371720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 383, 766, 1109, 1532, 1915, 2218, 3064, 3830, 4436, 5545, 7660, 8872, 11090, 15320, 22180, 44360, 424747, 849494, 1698988, 2123735, 3397976, 4247470, 8494940, 16989880]

約数ペア:

[(1, 16989880), (2, 8494940), (4, 4247470), (5, 3397976), (8, 2123735), (10, 1698988), (20, 849494), (40, 424747), (383, 44360), (766, 22180), (1109, 15320), (1532, 11090), (1915, 8872), (2218, 7660), (3064, 5545), (3830, 4436)]