17939720

素因数分解:

$2^3\times 5^1\times {\mathrm{383}}^1\times {\mathrm{1171}}^1$

素因数の和:1565

約数の個数: 32

約数和(自身を含む): 40504320

約数和(自身を除く): 22564600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 383, 766, 1171, 1532, 1915, 2342, 3064, 3830, 4684, 5855, 7660, 9368, 11710, 15320, 23420, 46840, 448493, 896986, 1793972, 2242465, 3587944, 4484930, 8969860, 17939720]

約数ペア:

[(1, 17939720), (2, 8969860), (4, 4484930), (5, 3587944), (8, 2242465), (10, 1793972), (20, 896986), (40, 448493), (383, 46840), (766, 23420), (1171, 15320), (1532, 11710), (1915, 9368), (2342, 7660), (3064, 5855), (3830, 4684)]