1288996880

素因数分解:

$2^4\times 5^1\times {\mathrm{16112461}}^1$

素因数の和:16112474

約数の個数: 20

約数和(自身を含む): 2996917932

約数和(自身を除く): 1707921052

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 16112461, 32224922, 64449844, 80562305, 128899688, 161124610, 257799376, 322249220, 644498440, 1288996880]

約数ペア:

[(1, 1288996880), (2, 644498440), (4, 322249220), (5, 257799376), (8, 161124610), (10, 128899688), (16, 80562305), (20, 64449844), (40, 32224922), (80, 16112461)]