21231438

素因数分解:

$2^1\times 3^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{1123}}^1$

素因数の和:1288

約数の個数: 32

約数和(自身を含む): 44672256

約数和(自身を除く): 23440818

約数列:

[1, 2, 3, 6, 23, 46, 69, 137, 138, 274, 411, 822, 1123, 2246, 3151, 3369, 6302, 6738, 9453, 18906, 25829, 51658, 77487, 153851, 154974, 307702, 461553, 923106, 3538573, 7077146, 10615719, 21231438]

約数ペア:

[(1, 21231438), (2, 10615719), (3, 7077146), (6, 3538573), (23, 923106), (46, 461553), (69, 307702), (137, 154974), (138, 153851), (274, 77487), (411, 51658), (822, 25829), (1123, 18906), (2246, 9453), (3151, 6738), (3369, 6302)]