1890668890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{89989}}^1$

素因数の和:90198

約数の個数: 32

約数和(自身を含む): 3732065280

約数和(自身を除く): 1841396390

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 191, 382, 955, 1910, 2101, 4202, 10505, 21010, 89989, 179978, 449945, 899890, 989879, 1979758, 4949395, 9898790, 17187899, 34375798, 85939495, 171878990, 189066889, 378133778, 945334445, 1890668890]

約数ペア:

[(1, 1890668890), (2, 945334445), (5, 378133778), (10, 189066889), (11, 171878990), (22, 85939495), (55, 34375798), (110, 17187899), (191, 9898790), (382, 4949395), (955, 1979758), (1910, 989879), (2101, 899890), (4202, 449945), (10505, 179978), (21010, 89989)]