20472507

素因数分解:

$3^7\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1$

素因数の和:92

約数の個数: 64

約数和(自身を含む): 35896320

約数和(自身を除く): 15423813

約数列:

[1, 3, 9, 11, 23, 27, 33, 37, 69, 81, 99, 111, 207, 243, 253, 297, 333, 407, 621, 729, 759, 851, 891, 999, 1221, 1863, 2187, 2277, 2553, 2673, 2997, 3663, 5589, 6831, 7659, 8019, 8991, 9361, 10989, 16767, 20493, 22977, 24057, 26973, 28083, 32967, 50301, 61479, 68931, 80919, 84249, 98901, 184437, 206793, 252747, 296703, 553311, 620379, 758241, 890109, 1861137, 2274723, 6824169, 20472507]

約数ペア:

[(1, 20472507), (3, 6824169), (9, 2274723), (11, 1861137), (23, 890109), (27, 758241), (33, 620379), (37, 553311), (69, 296703), (81, 252747), (99, 206793), (111, 184437), (207, 98901), (243, 84249), (253, 80919), (297, 68931), (333, 61479), (407, 50301), (621, 32967), (729, 28083), (759, 26973), (851, 24057), (891, 22977), (999, 20493), (1221, 16767), (1863, 10989), (2187, 9361), (2277, 8991), (2553, 8019), (2673, 7659), (2997, 6831), (3663, 5589)]