21093040

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13877}}^1$

素因数の和:13909

約数の個数: 40

約数和(自身を含む): 51626160

約数和(自身を除く): 30533120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13877, 27754, 55508, 69385, 111016, 138770, 222032, 263663, 277540, 527326, 555080, 1054652, 1110160, 1318315, 2109304, 2636630, 4218608, 5273260, 10546520, 21093040]

約数ペア:

[(1, 21093040), (2, 10546520), (4, 5273260), (5, 4218608), (8, 2636630), (10, 2109304), (16, 1318315), (19, 1110160), (20, 1054652), (38, 555080), (40, 527326), (76, 277540), (80, 263663), (95, 222032), (152, 138770), (190, 111016), (304, 69385), (380, 55508), (760, 27754), (1520, 13877)]