20217284

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{17489}}^1$

素因数の和:17527

約数の個数: 18

約数和(自身を含む): 37586010

約数和(自身を除く): 17368726

約数列:

[1, 2, 4, 17, 34, 68, 289, 578, 1156, 17489, 34978, 69956, 297313, 594626, 1189252, 5054321, 10108642, 20217284]

約数ペア:

[(1, 20217284), (2, 10108642), (4, 5054321), (17, 1189252), (34, 594626), (68, 297313), (289, 69956), (578, 34978), (1156, 17489)]