21313808

素因数分解:

$2^4\times {\mathrm{409}}^1\times {\mathrm{3257}}^1$

素因数の和:3674

約数の個数: 20

約数和(自身を含む): 41409180

約数和(自身を除く): 20095372

約数列:

[1, 2, 4, 8, 16, 409, 818, 1636, 3257, 3272, 6514, 6544, 13028, 26056, 52112, 1332113, 2664226, 5328452, 10656904, 21313808]

約数ペア:

[(1, 21313808), (2, 10656904), (4, 5328452), (8, 2664226), (16, 1332113), (409, 52112), (818, 26056), (1636, 13028), (3257, 6544), (3272, 6514)]