20591781

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{673}}^1$

素因数の和:761

約数の個数: 32

約数和(自身を含む): 33128448

約数和(自身を除く): 12536667

約数列:

[1, 3, 7, 21, 31, 47, 93, 141, 217, 329, 651, 673, 987, 1457, 2019, 4371, 4711, 10199, 14133, 20863, 30597, 31631, 62589, 94893, 146041, 221417, 438123, 664251, 980561, 2941683, 6863927, 20591781]

約数ペア:

[(1, 20591781), (3, 6863927), (7, 2941683), (21, 980561), (31, 664251), (47, 438123), (93, 221417), (141, 146041), (217, 94893), (329, 62589), (651, 31631), (673, 30597), (987, 20863), (1457, 14133), (2019, 10199), (4371, 4711)]