21865365

素因数分解:

$3^2\times 5^1\times {\mathrm{647}}^1\times {\mathrm{751}}^1$

素因数の和:1409

約数の個数: 24

約数和(自身を含む): 38009088

約数和(自身を除く): 16143723

約数列:

[1, 3, 5, 9, 15, 45, 647, 751, 1941, 2253, 3235, 3755, 5823, 6759, 9705, 11265, 29115, 33795, 485897, 1457691, 2429485, 4373073, 7288455, 21865365]

約数ペア:

[(1, 21865365), (3, 7288455), (5, 4373073), (9, 2429485), (15, 1457691), (45, 485897), (647, 33795), (751, 29115), (1941, 11265), (2253, 9705), (3235, 6759), (3755, 5823)]