25173540

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{19979}}^1$

素因数の和:20001

約数の個数: 72

約数和(自身を含む): 87272640

約数和(自身を除く): 62099100

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 19979, 39958, 59937, 79916, 99895, 119874, 139853, 179811, 199790, 239748, 279706, 299685, 359622, 399580, 419559, 559412, 599370, 699265, 719244, 839118, 899055, 1198740, 1258677, 1398530, 1678236, 1798110, 2097795, 2517354, 2797060, 3596220, 4195590, 5034708, 6293385, 8391180, 12586770, 25173540]

約数ペア:

[(1, 25173540), (2, 12586770), (3, 8391180), (4, 6293385), (5, 5034708), (6, 4195590), (7, 3596220), (9, 2797060), (10, 2517354), (12, 2097795), (14, 1798110), (15, 1678236), (18, 1398530), (20, 1258677), (21, 1198740), (28, 899055), (30, 839118), (35, 719244), (36, 699265), (42, 599370), (45, 559412), (60, 419559), (63, 399580), (70, 359622), (84, 299685), (90, 279706), (105, 239748), (126, 199790), (140, 179811), (180, 139853), (210, 119874), (252, 99895), (315, 79916), (420, 59937), (630, 39958), (1260, 19979)]