21000906405

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{419}}^1\times {\mathrm{30103}}^1$

素因数の和:30570

約数の個数: 48

約数和(自身を含む): 37475867520

約数和(自身を除く): 16474961115

約数列:

[1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 419, 555, 1257, 1665, 2095, 3771, 6285, 15503, 18855, 30103, 46509, 77515, 90309, 139527, 150515, 232545, 270927, 451545, 697635, 1113811, 1354635, 3341433, 5569055, 10024299, 12613157, 16707165, 37839471, 50121495, 63065785, 113518413, 189197355, 466686809, 567592065, 1400060427, 2333434045, 4200181281, 7000302135, 21000906405]

約数ペア:

[(1, 21000906405), (3, 7000302135), (5, 4200181281), (9, 2333434045), (15, 1400060427), (37, 567592065), (45, 466686809), (111, 189197355), (185, 113518413), (333, 63065785), (419, 50121495), (555, 37839471), (1257, 16707165), (1665, 12613157), (2095, 10024299), (3771, 5569055), (6285, 3341433), (15503, 1354635), (18855, 1113811), (30103, 697635), (46509, 451545), (77515, 270927), (90309, 232545), (139527, 150515)]