21256016758

素因数分解:

$2^1\times {\mathrm{821}}^1\times {\mathrm{3221}}^1\times {\mathrm{4019}}^1$

素因数の和:8063

約数の個数: 16

約数和(自身を含む): 31940717040

約数和(自身を除く): 10684700282

約数列:

[1, 2, 821, 1642, 3221, 4019, 6442, 8038, 2644441, 3299599, 5288882, 6599198, 12945199, 25890398, 10628008379, 21256016758]

約数ペア:

[(1, 21256016758), (2, 10628008379), (821, 25890398), (1642, 12945199), (3221, 6599198), (4019, 5288882), (6442, 3299599), (8038, 2644441)]