2561475

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1$

素因数の和:85

約数の個数: 72

約数和(自身を含む): 5343408

約数和(自身を除く): 2781933

約数列:

[1, 3, 5, 7, 15, 17, 21, 25, 35, 41, 49, 51, 75, 85, 105, 119, 123, 147, 175, 205, 245, 255, 287, 357, 425, 525, 595, 615, 697, 735, 833, 861, 1025, 1225, 1275, 1435, 1785, 2009, 2091, 2499, 2975, 3075, 3485, 3675, 4165, 4305, 4879, 6027, 7175, 8925, 10045, 10455, 12495, 14637, 17425, 20825, 21525, 24395, 30135, 34153, 50225, 52275, 62475, 73185, 102459, 121975, 150675, 170765, 365925, 512295, 853825, 2561475]

約数ペア:

[(1, 2561475), (3, 853825), (5, 512295), (7, 365925), (15, 170765), (17, 150675), (21, 121975), (25, 102459), (35, 73185), (41, 62475), (49, 52275), (51, 50225), (75, 34153), (85, 30135), (105, 24395), (119, 21525), (123, 20825), (147, 17425), (175, 14637), (205, 12495), (245, 10455), (255, 10045), (287, 8925), (357, 7175), (425, 6027), (525, 4879), (595, 4305), (615, 4165), (697, 3675), (735, 3485), (833, 3075), (861, 2975), (1025, 2499), (1225, 2091), (1275, 2009), (1435, 1785)]