21325480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2851}}^1$

素因数の和:2890

約数の個数: 64

約数和(自身を含む): 55442880

約数和(自身を除く): 34117400

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 68, 85, 88, 110, 136, 170, 187, 220, 340, 374, 440, 680, 748, 935, 1496, 1870, 2851, 3740, 5702, 7480, 11404, 14255, 22808, 28510, 31361, 48467, 57020, 62722, 96934, 114040, 125444, 156805, 193868, 242335, 250888, 313610, 387736, 484670, 533137, 627220, 969340, 1066274, 1254440, 1938680, 2132548, 2665685, 4265096, 5331370, 10662740, 21325480]

約数ペア:

[(1, 21325480), (2, 10662740), (4, 5331370), (5, 4265096), (8, 2665685), (10, 2132548), (11, 1938680), (17, 1254440), (20, 1066274), (22, 969340), (34, 627220), (40, 533137), (44, 484670), (55, 387736), (68, 313610), (85, 250888), (88, 242335), (110, 193868), (136, 156805), (170, 125444), (187, 114040), (220, 96934), (340, 62722), (374, 57020), (440, 48467), (680, 31361), (748, 28510), (935, 22808), (1496, 14255), (1870, 11404), (2851, 7480), (3740, 5702)]