18119720

素因数分解:

$2^3\times 5^1\times {\mathrm{317}}^1\times {\mathrm{1429}}^1$

素因数の和:1757

約数の個数: 32

約数和(自身を含む): 40926600

約数和(自身を除く): 22806880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 317, 634, 1268, 1429, 1585, 2536, 2858, 3170, 5716, 6340, 7145, 11432, 12680, 14290, 28580, 57160, 452993, 905986, 1811972, 2264965, 3623944, 4529930, 9059860, 18119720]

約数ペア:

[(1, 18119720), (2, 9059860), (4, 4529930), (5, 3623944), (8, 2264965), (10, 1811972), (20, 905986), (40, 452993), (317, 57160), (634, 28580), (1268, 14290), (1429, 12680), (1585, 11432), (2536, 7145), (2858, 6340), (3170, 5716)]