20618613

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{787}}^1$

素因数の和:905

約数の個数: 24

約数和(自身を含む): 30977856

約数和(自身を除く): 10359243

約数列:

[1, 3, 9, 41, 71, 123, 213, 369, 639, 787, 2361, 2911, 7083, 8733, 26199, 32267, 55877, 96801, 167631, 290403, 502893, 2290957, 6872871, 20618613]

約数ペア:

[(1, 20618613), (3, 6872871), (9, 2290957), (41, 502893), (71, 290403), (123, 167631), (213, 96801), (369, 55877), (639, 32267), (787, 26199), (2361, 8733), (2911, 7083)]