20756813

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1$

素因数の和:293

約数の個数: 32

約数和(自身を含む): 27848448

約数和(自身を除く): 7091635

約数列:

[1, 7, 11, 17, 77, 101, 119, 157, 187, 707, 1099, 1111, 1309, 1717, 1727, 2669, 7777, 12019, 12089, 15857, 18683, 18887, 29359, 110999, 132209, 174427, 205513, 269569, 1220989, 1886983, 2965259, 20756813]

約数ペア:

[(1, 20756813), (7, 2965259), (11, 1886983), (17, 1220989), (77, 269569), (101, 205513), (119, 174427), (157, 132209), (187, 110999), (707, 29359), (1099, 18887), (1111, 18683), (1309, 15857), (1717, 12089), (1727, 12019), (2669, 7777)]