21296709

素因数分解:

$3^3\times 7^1\times {\mathrm{281}}^1\times {\mathrm{401}}^1$

素因数の和:698

約数の個数: 32

約数和(自身を含む): 36276480

約数和(自身を除く): 14979771

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 281, 401, 843, 1203, 1967, 2529, 2807, 3609, 5901, 7587, 8421, 10827, 17703, 25263, 53109, 75789, 112681, 338043, 788767, 1014129, 2366301, 3042387, 7098903, 21296709]

約数ペア:

[(1, 21296709), (3, 7098903), (7, 3042387), (9, 2366301), (21, 1014129), (27, 788767), (63, 338043), (189, 112681), (281, 75789), (401, 53109), (843, 25263), (1203, 17703), (1967, 10827), (2529, 8421), (2807, 7587), (3609, 5901)]