21404105

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{8123}}^1$

素因数の和:8176

約数の個数: 16

約数和(自身を含む): 28076544

約数和(自身を除く): 6672439

約数列:

[1, 5, 17, 31, 85, 155, 527, 2635, 8123, 40615, 138091, 251813, 690455, 1259065, 4280821, 21404105]

約数ペア:

[(1, 21404105), (5, 4280821), (17, 1259065), (31, 690455), (85, 251813), (155, 138091), (527, 40615), (2635, 8123)]