21176020

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{15803}}^1$

素因数の和:15879

約数の個数: 24

約数和(自身を含む): 45136224

約数和(自身を除く): 23960204

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 15803, 31606, 63212, 79015, 158030, 316060, 1058801, 2117602, 4235204, 5294005, 10588010, 21176020]

約数ペア:

[(1, 21176020), (2, 10588010), (4, 5294005), (5, 4235204), (10, 2117602), (20, 1058801), (67, 316060), (134, 158030), (268, 79015), (335, 63212), (670, 31606), (1340, 15803)]