28912975

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 44997120

約数和(自身を除く): 16084145

約数列:

[1, 5, 7, 13, 25, 35, 65, 71, 91, 175, 179, 325, 355, 455, 497, 895, 923, 1253, 1775, 2275, 2327, 2485, 4475, 4615, 6265, 6461, 11635, 12425, 12709, 16289, 23075, 31325, 32305, 58175, 63545, 81445, 88963, 161525, 165217, 317725, 407225, 444815, 826085, 1156519, 2224075, 4130425, 5782595, 28912975]

約数ペア:

[(1, 28912975), (5, 5782595), (7, 4130425), (13, 2224075), (25, 1156519), (35, 826085), (65, 444815), (71, 407225), (91, 317725), (175, 165217), (179, 161525), (325, 88963), (355, 81445), (455, 63545), (497, 58175), (895, 32305), (923, 31325), (1253, 23075), (1775, 16289), (2275, 12709), (2327, 12425), (2485, 11635), (4475, 6461), (4615, 6265)]