19710830

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{22147}}^1$

素因数の和:22243

約数の個数: 16

約数和(自身を含む): 35879760

約数和(自身を除く): 16168930

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 22147, 44294, 110735, 221470, 1971083, 3942166, 9855415, 19710830]

約数ペア:

[(1, 19710830), (2, 9855415), (5, 3942166), (10, 1971083), (89, 221470), (178, 110735), (445, 44294), (890, 22147)]