21236735

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{3671}}^1$

素因数の和:3778

約数の個数: 16

約数和(自身を含む): 27760320

約数和(自身を除く): 6523585

約数列:

[1, 5, 13, 65, 89, 445, 1157, 3671, 5785, 18355, 47723, 238615, 326719, 1633595, 4247347, 21236735]

約数ペア:

[(1, 21236735), (5, 4247347), (13, 1633595), (65, 326719), (89, 238615), (445, 47723), (1157, 18355), (3671, 5785)]