81635960

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{41651}}^1$

素因数の和:41676

約数の個数: 48

約数和(自身を含む): 213674760

約数和(自身を除く): 132038800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 41651, 83302, 166604, 208255, 291557, 333208, 416510, 583114, 833020, 1166228, 1457785, 1666040, 2040899, 2332456, 2915570, 4081798, 5831140, 8163596, 10204495, 11662280, 16327192, 20408990, 40817980, 81635960]

約数ペア:

[(1, 81635960), (2, 40817980), (4, 20408990), (5, 16327192), (7, 11662280), (8, 10204495), (10, 8163596), (14, 5831140), (20, 4081798), (28, 2915570), (35, 2332456), (40, 2040899), (49, 1666040), (56, 1457785), (70, 1166228), (98, 833020), (140, 583114), (196, 416510), (245, 333208), (280, 291557), (392, 208255), (490, 166604), (980, 83302), (1960, 41651)]