816818975

素因数分解:

$5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{643}}^1$

素因数の和:745

約数の個数: 72

約数和(自身を含む): 1269949968

約数和(自身を除く): 453130993

約数列:

[1, 5, 7, 17, 25, 35, 49, 61, 85, 119, 175, 245, 305, 425, 427, 595, 643, 833, 1037, 1225, 1525, 2135, 2975, 2989, 3215, 4165, 4501, 5185, 7259, 10675, 10931, 14945, 16075, 20825, 22505, 25925, 31507, 36295, 39223, 50813, 54655, 74725, 76517, 112525, 157535, 181475, 196115, 254065, 273275, 274561, 382585, 535619, 666791, 787675, 980575, 1270325, 1372805, 1912925, 1921927, 2678095, 3333955, 4667537, 6864025, 9609635, 13390475, 16669775, 23337685, 32672759, 48048175, 116688425, 163363795, 816818975]

約数ペア:

[(1, 816818975), (5, 163363795), (7, 116688425), (17, 48048175), (25, 32672759), (35, 23337685), (49, 16669775), (61, 13390475), (85, 9609635), (119, 6864025), (175, 4667537), (245, 3333955), (305, 2678095), (425, 1921927), (427, 1912925), (595, 1372805), (643, 1270325), (833, 980575), (1037, 787675), (1225, 666791), (1525, 535619), (2135, 382585), (2975, 274561), (2989, 273275), (3215, 254065), (4165, 196115), (4501, 181475), (5185, 157535), (7259, 112525), (10675, 76517), (10931, 74725), (14945, 54655), (16075, 50813), (20825, 39223), (22505, 36295), (25925, 31507)]