18719720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27529}}^1$

素因数の和:27557

約数の個数: 32

約数和(自身を含む): 44598600

約数和(自身を除く): 25878880

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 27529, 55058, 110116, 137645, 220232, 275290, 467993, 550580, 935986, 1101160, 1871972, 2339965, 3743944, 4679930, 9359860, 18719720]

約数ペア:

[(1, 18719720), (2, 9359860), (4, 4679930), (5, 3743944), (8, 2339965), (10, 1871972), (17, 1101160), (20, 935986), (34, 550580), (40, 467993), (68, 275290), (85, 220232), (136, 137645), (170, 110116), (340, 55058), (680, 27529)]