21107944

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{18451}}^1$

素因数の和:18481

約数の個数: 32

約数和(自身を含む): 46499040

約数和(自身を除く): 25391096

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 286, 572, 1144, 18451, 36902, 73804, 147608, 202961, 239863, 405922, 479726, 811844, 959452, 1623688, 1918904, 2638493, 5276986, 10553972, 21107944]

約数ペア:

[(1, 21107944), (2, 10553972), (4, 5276986), (8, 2638493), (11, 1918904), (13, 1623688), (22, 959452), (26, 811844), (44, 479726), (52, 405922), (88, 239863), (104, 202961), (143, 147608), (286, 73804), (572, 36902), (1144, 18451)]