21260151

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{223}}^1$

素因数の和:353

約数の個数: 40

約数和(自身を含む): 35126784

約数和(自身を除く): 13866633

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 107, 223, 297, 321, 669, 891, 963, 1177, 2007, 2453, 2889, 3531, 6021, 7359, 8667, 10593, 18063, 22077, 23861, 31779, 66231, 71583, 95337, 198693, 214749, 262471, 644247, 787413, 1932741, 2362239, 7086717, 21260151]

約数ペア:

[(1, 21260151), (3, 7086717), (9, 2362239), (11, 1932741), (27, 787413), (33, 644247), (81, 262471), (99, 214749), (107, 198693), (223, 95337), (297, 71583), (321, 66231), (669, 31779), (891, 23861), (963, 22077), (1177, 18063), (2007, 10593), (2453, 8667), (2889, 7359), (3531, 6021)]