20796894909

素因数分解:

$3^4\times 7^1\times {\mathrm{109}}^1\times {\mathrm{336503}}^1$

素因数の和:336631

約数の個数: 40

約数和(自身を含む): 35830945920

約数和(自身を除く): 15034051011

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 109, 189, 327, 567, 763, 981, 2289, 2943, 6867, 8829, 20601, 61803, 336503, 1009509, 2355521, 3028527, 7066563, 9085581, 21199689, 27256743, 36678827, 63599067, 110036481, 190797201, 256751789, 330109443, 770255367, 990328329, 2310766101, 2970984987, 6932298303, 20796894909]

約数ペア:

[(1, 20796894909), (3, 6932298303), (7, 2970984987), (9, 2310766101), (21, 990328329), (27, 770255367), (63, 330109443), (81, 256751789), (109, 190797201), (189, 110036481), (327, 63599067), (567, 36678827), (763, 27256743), (981, 21199689), (2289, 9085581), (2943, 7066563), (6867, 3028527), (8829, 2355521), (20601, 1009509), (61803, 336503)]