20730123

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{863}}^1$

素因数の和:1043

約数の個数: 24

約数和(自身を含む): 31943808

約数和(自身を除く): 11213685

約数列:

[1, 3, 9, 17, 51, 153, 157, 471, 863, 1413, 2589, 2669, 7767, 8007, 14671, 24021, 44013, 132039, 135491, 406473, 1219419, 2303347, 6910041, 20730123]

約数ペア:

[(1, 20730123), (3, 6910041), (9, 2303347), (17, 1219419), (51, 406473), (153, 135491), (157, 132039), (471, 44013), (863, 24021), (1413, 14671), (2589, 8007), (2669, 7767)]