19558960

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{2243}}^1$

素因数の和:2365

約数の個数: 40

約数和(自身を含む): 45912240

約数和(自身を除く): 26353280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 2243, 4360, 4486, 8720, 8972, 11215, 17944, 22430, 35888, 44860, 89720, 179440, 244487, 488974, 977948, 1222435, 1955896, 2444870, 3911792, 4889740, 9779480, 19558960]

約数ペア:

[(1, 19558960), (2, 9779480), (4, 4889740), (5, 3911792), (8, 2444870), (10, 1955896), (16, 1222435), (20, 977948), (40, 488974), (80, 244487), (109, 179440), (218, 89720), (436, 44860), (545, 35888), (872, 22430), (1090, 17944), (1744, 11215), (2180, 8972), (2243, 8720), (4360, 4486)]