18900245

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41539}}^1$

素因数の和:41564

約数の個数: 16

約数和(自身を含む): 27914880

約数和(自身を除く): 9014635

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 41539, 207695, 290773, 540007, 1453865, 2700035, 3780049, 18900245]

約数ペア:

[(1, 18900245), (5, 3780049), (7, 2700035), (13, 1453865), (35, 540007), (65, 290773), (91, 207695), (455, 41539)]