21685745

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1$

素因数の和:209

約数の個数: 32

約数和(自身を含む): 28771200

約数和(自身を除く): 7085455

約数列:

[1, 5, 19, 53, 59, 73, 95, 265, 295, 365, 1007, 1121, 1387, 3127, 3869, 4307, 5035, 5605, 6935, 15635, 19345, 21535, 59413, 73511, 81833, 228271, 297065, 367555, 409165, 1141355, 4337149, 21685745]

約数ペア:

[(1, 21685745), (5, 4337149), (19, 1141355), (53, 409165), (59, 367555), (73, 297065), (95, 228271), (265, 81833), (295, 73511), (365, 59413), (1007, 21535), (1121, 19345), (1387, 15635), (3127, 6935), (3869, 5605), (4307, 5035)]