21321904

素因数分解:

$2^4\times {\mathrm{173}}^1\times {\mathrm{7703}}^1$

素因数の和:7884

約数の個数: 20

約数和(自身を含む): 41555376

約数和(自身を除く): 20233472

約数列:

[1, 2, 4, 8, 16, 173, 346, 692, 1384, 2768, 7703, 15406, 30812, 61624, 123248, 1332619, 2665238, 5330476, 10660952, 21321904]

約数ペア:

[(1, 21321904), (2, 10660952), (4, 5330476), (8, 2665238), (16, 1332619), (173, 123248), (346, 61624), (692, 30812), (1384, 15406), (2768, 7703)]