66790940

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1\times {\mathrm{239}}^1$

素因数の和:494

約数の個数: 48

約数和(自身を含む): 143337600

約数和(自身を除く): 76546660

約数列:

[1, 2, 4, 5, 10, 20, 89, 157, 178, 239, 314, 356, 445, 478, 628, 785, 890, 956, 1195, 1570, 1780, 2390, 3140, 4780, 13973, 21271, 27946, 37523, 42542, 55892, 69865, 75046, 85084, 106355, 139730, 150092, 187615, 212710, 279460, 375230, 425420, 750460, 3339547, 6679094, 13358188, 16697735, 33395470, 66790940]

約数ペア:

[(1, 66790940), (2, 33395470), (4, 16697735), (5, 13358188), (10, 6679094), (20, 3339547), (89, 750460), (157, 425420), (178, 375230), (239, 279460), (314, 212710), (356, 187615), (445, 150092), (478, 139730), (628, 106355), (785, 85084), (890, 75046), (956, 69865), (1195, 55892), (1570, 42542), (1780, 37523), (2390, 27946), (3140, 21271), (4780, 13973)]