16990990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{1123}}^1$

素因数の和:1236

約数の個数: 32

約数和(自身を含む): 32775840

約数和(自身を除く): 15784850

約数列:

[1, 2, 5, 10, 17, 34, 85, 89, 170, 178, 445, 890, 1123, 1513, 2246, 3026, 5615, 7565, 11230, 15130, 19091, 38182, 95455, 99947, 190910, 199894, 499735, 999470, 1699099, 3398198, 8495495, 16990990]

約数ペア:

[(1, 16990990), (2, 8495495), (5, 3398198), (10, 1699099), (17, 999470), (34, 499735), (85, 199894), (89, 190910), (170, 99947), (178, 95455), (445, 38182), (890, 19091), (1123, 15130), (1513, 11230), (2246, 7565), (3026, 5615)]