20178800375

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{211}}^1\times {\mathrm{601}}^1$

素因数の和:913

約数の個数: 64

約数和(自身を含む): 27076707840

約数和(自身を除く): 6897907465

約数列:

[1, 5, 19, 25, 67, 95, 125, 211, 335, 475, 601, 1055, 1273, 1675, 2375, 3005, 4009, 5275, 6365, 8375, 11419, 14137, 15025, 20045, 26375, 31825, 40267, 57095, 70685, 75125, 100225, 126811, 159125, 201335, 268603, 285475, 353425, 501125, 634055, 765073, 1006675, 1343015, 1427375, 1767125, 2409409, 3170275, 3825365, 5033375, 6715075, 8496337, 12047045, 15851375, 19126825, 33575375, 42481685, 60235225, 95634125, 161430403, 212408425, 301176125, 807152015, 1062042125, 4035760075, 20178800375]

約数ペア:

[(1, 20178800375), (5, 4035760075), (19, 1062042125), (25, 807152015), (67, 301176125), (95, 212408425), (125, 161430403), (211, 95634125), (335, 60235225), (475, 42481685), (601, 33575375), (1055, 19126825), (1273, 15851375), (1675, 12047045), (2375, 8496337), (3005, 6715075), (4009, 5033375), (5275, 3825365), (6365, 3170275), (8375, 2409409), (11419, 1767125), (14137, 1427375), (15025, 1343015), (20045, 1006675), (26375, 765073), (31825, 634055), (40267, 501125), (57095, 353425), (70685, 285475), (75125, 268603), (100225, 201335), (126811, 159125)]