21657368

素因数分解:

$2^3\times {\mathrm{409}}^1\times {\mathrm{6619}}^1$

素因数の和:7034

約数の個数: 16

約数和(自身を含む): 40713000

約数和(自身を除く): 19055632

約数列:

[1, 2, 4, 8, 409, 818, 1636, 3272, 6619, 13238, 26476, 52952, 2707171, 5414342, 10828684, 21657368]

約数ペア:

[(1, 21657368), (2, 10828684), (4, 5414342), (8, 2707171), (409, 52952), (818, 26476), (1636, 13238), (3272, 6619)]