20961017

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{239}}^1$

素因数の和:341

約数の個数: 32

約数和(自身を含む): 28200960

約数和(自身を除く): 7239943

約数列:

[1, 7, 11, 17, 67, 77, 119, 187, 239, 469, 737, 1139, 1309, 1673, 2629, 4063, 5159, 7973, 12529, 16013, 18403, 28441, 44693, 87703, 112091, 176143, 272221, 312851, 1233001, 1905547, 2994431, 20961017]

約数ペア:

[(1, 20961017), (7, 2994431), (11, 1905547), (17, 1233001), (67, 312851), (77, 272221), (119, 176143), (187, 112091), (239, 87703), (469, 44693), (737, 28441), (1139, 18403), (1309, 16013), (1673, 12529), (2629, 7973), (4063, 5159)]