20707929

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 35006400

約数和(自身を除く): 14298471

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 101, 109, 171, 209, 303, 327, 627, 909, 981, 1111, 1199, 1881, 1919, 2071, 3333, 3597, 5757, 6213, 9999, 10791, 11009, 17271, 18639, 21109, 22781, 33027, 63327, 68343, 99081, 121099, 189981, 205029, 209171, 363297, 627513, 1089891, 1882539, 2300881, 6902643, 20707929]

約数ペア:

[(1, 20707929), (3, 6902643), (9, 2300881), (11, 1882539), (19, 1089891), (33, 627513), (57, 363297), (99, 209171), (101, 205029), (109, 189981), (171, 121099), (209, 99081), (303, 68343), (327, 63327), (627, 33027), (909, 22781), (981, 21109), (1111, 18639), (1199, 17271), (1881, 11009), (1919, 10791), (2071, 9999), (3333, 6213), (3597, 5757)]