21854679

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2557}}^1$

素因数の和:2615

約数の個数: 32

約数和(自身を含む): 37326336

約数和(自身を除く): 15471657

約数列:

[1, 3, 7, 11, 21, 33, 37, 77, 111, 231, 259, 407, 777, 1221, 2557, 2849, 7671, 8547, 17899, 28127, 53697, 84381, 94609, 196889, 283827, 590667, 662263, 1040699, 1986789, 3122097, 7284893, 21854679]

約数ペア:

[(1, 21854679), (3, 7284893), (7, 3122097), (11, 1986789), (21, 1040699), (33, 662263), (37, 590667), (77, 283827), (111, 196889), (231, 94609), (259, 84381), (407, 53697), (777, 28127), (1221, 17899), (2557, 8547), (2849, 7671)]