18122972

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{20879}}^1$

素因数の和:20921

約数の個数: 24

約数和(自身を含む): 37416960

約数和(自身を除く): 19293988

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868, 20879, 41758, 83516, 146153, 292306, 584612, 647249, 1294498, 2588996, 4530743, 9061486, 18122972]

約数ペア:

[(1, 18122972), (2, 9061486), (4, 4530743), (7, 2588996), (14, 1294498), (28, 647249), (31, 584612), (62, 292306), (124, 146153), (217, 83516), (434, 41758), (868, 20879)]