21000884786

素因数分解:

$2^1\times 7^1\times {\mathrm{503}}^1\times {\mathrm{2982233}}^1$

素因数の和:2982745

約数の個数: 16

約数和(自身を含む): 36073102464

約数和(自身を除く): 15072217678

約数列:

[1, 2, 7, 14, 503, 1006, 3521, 7042, 2982233, 5964466, 20875631, 41751262, 1500063199, 3000126398, 10500442393, 21000884786]

約数ペア:

[(1, 21000884786), (2, 10500442393), (7, 3000126398), (14, 1500063199), (503, 41751262), (1006, 20875631), (3521, 5964466), (7042, 2982233)]