21545517

素因数分解:

$3^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{2437}}^1$

素因数の和:2868

約数の個数: 16

約数和(自身を含む): 32922752

約数和(自身を除く): 11377235

約数列:

[1, 3, 7, 21, 421, 1263, 2437, 2947, 7311, 8841, 17059, 51177, 1025977, 3077931, 7181839, 21545517]

約数ペア:

[(1, 21545517), (3, 7181839), (7, 3077931), (21, 1025977), (421, 51177), (1263, 17059), (2437, 8841), (2947, 7311)]