21691340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{98597}}^1$

素因数の和:98617

約数の個数: 24

約数和(自身を含む): 49693392

約数和(自身を除く): 28002052

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 98597, 197194, 394388, 492985, 985970, 1084567, 1971940, 2169134, 4338268, 5422835, 10845670, 21691340]

約数ペア:

[(1, 21691340), (2, 10845670), (4, 5422835), (5, 4338268), (10, 2169134), (11, 1971940), (20, 1084567), (22, 985970), (44, 492985), (55, 394388), (110, 197194), (220, 98597)]