18120487

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{127}}^1$

素因数の和:271

約数の個数: 32

約数和(自身を含む): 24330240

約数和(自身を除く): 6209753

約数列:

[1, 7, 11, 17, 77, 109, 119, 127, 187, 763, 889, 1199, 1309, 1397, 1853, 2159, 8393, 9779, 12971, 13843, 15113, 20383, 23749, 96901, 142681, 152273, 166243, 235331, 1065911, 1647317, 2588641, 18120487]

約数ペア:

[(1, 18120487), (7, 2588641), (11, 1647317), (17, 1065911), (77, 235331), (109, 166243), (119, 152273), (127, 142681), (187, 96901), (763, 23749), (889, 20383), (1199, 15113), (1309, 13843), (1397, 12971), (1853, 9779), (2159, 8393)]