20831745

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{503}}^1$

素因数の和:773

約数の個数: 32

約数和(自身を含む): 36578304

約数和(自身を除く): 15746559

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 251, 503, 753, 1255, 1509, 2515, 2761, 3765, 5533, 7545, 8283, 13805, 16599, 27665, 41415, 82995, 126253, 378759, 631265, 1388783, 1893795, 4166349, 6943915, 20831745]

約数ペア:

[(1, 20831745), (3, 6943915), (5, 4166349), (11, 1893795), (15, 1388783), (33, 631265), (55, 378759), (165, 126253), (251, 82995), (503, 41415), (753, 27665), (1255, 16599), (1509, 13805), (2515, 8283), (2761, 7545), (3765, 5533)]