51891945

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{37}}^2$

素因数の和:127

約数の個数: 72

約数和(自身を含む): 102924864

約数和(自身を除く): 51032919

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 37, 57, 95, 105, 111, 133, 185, 259, 285, 361, 399, 555, 665, 703, 777, 1083, 1295, 1369, 1805, 1995, 2109, 2527, 3515, 3885, 4107, 4921, 5415, 6845, 7581, 9583, 10545, 12635, 13357, 14763, 20535, 24605, 26011, 28749, 37905, 40071, 47915, 66785, 73815, 78033, 93499, 130055, 143745, 182077, 200355, 280497, 390165, 467495, 494209, 546231, 910385, 1402485, 1482627, 2471045, 2731155, 3459463, 7413135, 10378389, 17297315, 51891945]

約数ペア:

[(1, 51891945), (3, 17297315), (5, 10378389), (7, 7413135), (15, 3459463), (19, 2731155), (21, 2471045), (35, 1482627), (37, 1402485), (57, 910385), (95, 546231), (105, 494209), (111, 467495), (133, 390165), (185, 280497), (259, 200355), (285, 182077), (361, 143745), (399, 130055), (555, 93499), (665, 78033), (703, 73815), (777, 66785), (1083, 47915), (1295, 40071), (1369, 37905), (1805, 28749), (1995, 26011), (2109, 24605), (2527, 20535), (3515, 14763), (3885, 13357), (4107, 12635), (4921, 10545), (5415, 9583), (6845, 7581)]