12881720

素因数分解:

$2^3\times 5^1\times {\mathrm{307}}^1\times {\mathrm{1049}}^1$

素因数の和:1367

約数の個数: 32

約数和(自身を含む): 29106000

約数和(自身を除く): 16224280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 307, 614, 1049, 1228, 1535, 2098, 2456, 3070, 4196, 5245, 6140, 8392, 10490, 12280, 20980, 41960, 322043, 644086, 1288172, 1610215, 2576344, 3220430, 6440860, 12881720]

約数ペア:

[(1, 12881720), (2, 6440860), (4, 3220430), (5, 2576344), (8, 1610215), (10, 1288172), (20, 644086), (40, 322043), (307, 41960), (614, 20980), (1049, 12280), (1228, 10490), (1535, 8392), (2098, 6140), (2456, 5245), (3070, 4196)]