8257725

素因数分解:

$3^2\times 5^2\times 7^3\times {\mathrm{107}}^1$

素因数の和:144

約数の個数: 72

約数和(自身を含む): 17409600

約数和(自身を除く): 9151875

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 49, 63, 75, 105, 107, 147, 175, 225, 245, 315, 321, 343, 441, 525, 535, 735, 749, 963, 1029, 1225, 1575, 1605, 1715, 2205, 2247, 2675, 3087, 3675, 3745, 4815, 5145, 5243, 6741, 8025, 8575, 11025, 11235, 15435, 15729, 18725, 24075, 25725, 26215, 33705, 36701, 47187, 56175, 77175, 78645, 110103, 131075, 168525, 183505, 235935, 330309, 393225, 550515, 917525, 1179675, 1651545, 2752575, 8257725]

約数ペア:

[(1, 8257725), (3, 2752575), (5, 1651545), (7, 1179675), (9, 917525), (15, 550515), (21, 393225), (25, 330309), (35, 235935), (45, 183505), (49, 168525), (63, 131075), (75, 110103), (105, 78645), (107, 77175), (147, 56175), (175, 47187), (225, 36701), (245, 33705), (315, 26215), (321, 25725), (343, 24075), (441, 18725), (525, 15729), (535, 15435), (735, 11235), (749, 11025), (963, 8575), (1029, 8025), (1225, 6741), (1575, 5243), (1605, 5145), (1715, 4815), (2205, 3745), (2247, 3675), (2675, 3087)]