78879560

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{223}}^1\times {\mathrm{239}}^1$

素因数の和:510

約数の個数: 64

約数和(自身を含む): 183859200

約数和(自身を除く): 104979640

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 223, 239, 296, 370, 446, 478, 740, 892, 956, 1115, 1195, 1480, 1784, 1912, 2230, 2390, 4460, 4780, 8251, 8843, 8920, 9560, 16502, 17686, 33004, 35372, 41255, 44215, 53297, 66008, 70744, 82510, 88430, 106594, 165020, 176860, 213188, 266485, 330040, 353720, 426376, 532970, 1065940, 1971989, 2131880, 3943978, 7887956, 9859945, 15775912, 19719890, 39439780, 78879560]

約数ペア:

[(1, 78879560), (2, 39439780), (4, 19719890), (5, 15775912), (8, 9859945), (10, 7887956), (20, 3943978), (37, 2131880), (40, 1971989), (74, 1065940), (148, 532970), (185, 426376), (223, 353720), (239, 330040), (296, 266485), (370, 213188), (446, 176860), (478, 165020), (740, 106594), (892, 88430), (956, 82510), (1115, 70744), (1195, 66008), (1480, 53297), (1784, 44215), (1912, 41255), (2230, 35372), (2390, 33004), (4460, 17686), (4780, 16502), (8251, 9560), (8843, 8920)]