318314980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{20431}}^1$

素因数の和:20500

約数の個数: 48

約数和(自身を含む): 720840960

約数和(自身を除く): 402525980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 95, 164, 190, 205, 380, 410, 779, 820, 1558, 3116, 3895, 7790, 15580, 20431, 40862, 81724, 102155, 204310, 388189, 408620, 776378, 837671, 1552756, 1675342, 1940945, 3350684, 3881890, 4188355, 7763780, 8376710, 15915749, 16753420, 31831498, 63662996, 79578745, 159157490, 318314980]

約数ペア:

[(1, 318314980), (2, 159157490), (4, 79578745), (5, 63662996), (10, 31831498), (19, 16753420), (20, 15915749), (38, 8376710), (41, 7763780), (76, 4188355), (82, 3881890), (95, 3350684), (164, 1940945), (190, 1675342), (205, 1552756), (380, 837671), (410, 776378), (779, 408620), (820, 388189), (1558, 204310), (3116, 102155), (3895, 81724), (7790, 40862), (15580, 20431)]