20479664

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{31219}}^1$

素因数の和:31268

約数の個数: 20

約数和(自身を含む): 40648440

約数和(自身を除く): 20168776

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 31219, 62438, 124876, 249752, 499504, 1279979, 2559958, 5119916, 10239832, 20479664]

約数ペア:

[(1, 20479664), (2, 10239832), (4, 5119916), (8, 2559958), (16, 1279979), (41, 499504), (82, 249752), (164, 124876), (328, 62438), (656, 31219)]