20573271

素因数分解:

$3^4\times {\mathrm{499}}^1\times {\mathrm{509}}^1$

素因数の和:1020

約数の個数: 20

約数和(自身を含む): 30855000

約数和(自身を除く): 10281729

約数列:

[1, 3, 9, 27, 81, 499, 509, 1497, 1527, 4491, 4581, 13473, 13743, 40419, 41229, 253991, 761973, 2285919, 6857757, 20573271]

約数ペア:

[(1, 20573271), (3, 6857757), (9, 2285919), (27, 761973), (81, 253991), (499, 41229), (509, 40419), (1497, 13743), (1527, 13473), (4491, 4581)]