19903355

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1$

素因数の和:203

約数の個数: 32

約数和(自身を含む): 26438400

約数和(自身を除く): 6535045

約数列:

[1, 5, 19, 53, 59, 67, 95, 265, 295, 335, 1007, 1121, 1273, 3127, 3551, 3953, 5035, 5605, 6365, 15635, 17755, 19765, 59413, 67469, 75107, 209509, 297065, 337345, 375535, 1047545, 3980671, 19903355]

約数ペア:

[(1, 19903355), (5, 3980671), (19, 1047545), (53, 375535), (59, 337345), (67, 297065), (95, 209509), (265, 75107), (295, 67469), (335, 59413), (1007, 19765), (1121, 17755), (1273, 15635), (3127, 6365), (3551, 5605), (3953, 5035)]