20279545

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{251}}^1$

素因数の和:393

約数の個数: 32

約数和(自身を含む): 28957824

約数和(自身を除く): 8678279

約数列:

[1, 5, 11, 13, 55, 65, 113, 143, 251, 565, 715, 1243, 1255, 1469, 2761, 3263, 6215, 7345, 13805, 16159, 16315, 28363, 35893, 80795, 141815, 179465, 311993, 368719, 1559965, 1843595, 4055909, 20279545]

約数ペア:

[(1, 20279545), (5, 4055909), (11, 1843595), (13, 1559965), (55, 368719), (65, 311993), (113, 179465), (143, 141815), (251, 80795), (565, 35893), (715, 28363), (1243, 16315), (1255, 16159), (1469, 13805), (2761, 7345), (3263, 6215)]