21550876781

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{540217}}^1$

素因数の和:540404

約数の個数: 16

約数和(自身を含む): 25411854720

約数和(自身を除く): 3860977939

約数列:

[1, 7, 41, 139, 287, 973, 5699, 39893, 540217, 3781519, 22148897, 75090163, 155042279, 525631141, 3078696683, 21550876781]

約数ペア:

[(1, 21550876781), (7, 3078696683), (41, 525631141), (139, 155042279), (287, 75090163), (973, 22148897), (5699, 3781519), (39893, 540217)]