20312805

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1\times {\mathrm{271}}^1$

素因数の和:561

約数の個数: 32

約数和(自身を含む): 34467840

約数和(自身を除く): 14155035

約数列:

[1, 3, 5, 15, 19, 57, 95, 263, 271, 285, 789, 813, 1315, 1355, 3945, 4065, 4997, 5149, 14991, 15447, 24985, 25745, 71273, 74955, 77235, 213819, 356365, 1069095, 1354187, 4062561, 6770935, 20312805]

約数ペア:

[(1, 20312805), (3, 6770935), (5, 4062561), (15, 1354187), (19, 1069095), (57, 356365), (95, 213819), (263, 77235), (271, 74955), (285, 71273), (789, 25745), (813, 24985), (1315, 15447), (1355, 14991), (3945, 5149), (4065, 4997)]