20984912

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{233}}^1\times {\mathrm{433}}^1$

素因数の和:687

約数の個数: 40

約数和(自身を含む): 44075304

約数和(自身を除く): 23090392

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 233, 433, 466, 866, 932, 1732, 1864, 3029, 3464, 3728, 5629, 6058, 6928, 11258, 12116, 22516, 24232, 45032, 48464, 90064, 100889, 201778, 403556, 807112, 1311557, 1614224, 2623114, 5246228, 10492456, 20984912]

約数ペア:

[(1, 20984912), (2, 10492456), (4, 5246228), (8, 2623114), (13, 1614224), (16, 1311557), (26, 807112), (52, 403556), (104, 201778), (208, 100889), (233, 90064), (433, 48464), (466, 45032), (866, 24232), (932, 22516), (1732, 12116), (1864, 11258), (3029, 6928), (3464, 6058), (3728, 5629)]