28826145

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1$

素因数の和:279

約数の個数: 64

約数和(自身を含む): 54720000

約数和(自身を除く): 25893855

約数列:

[1, 3, 5, 9, 15, 27, 29, 37, 45, 87, 111, 135, 145, 185, 199, 261, 333, 435, 555, 597, 783, 995, 999, 1073, 1305, 1665, 1791, 2985, 3219, 3915, 4995, 5365, 5373, 5771, 7363, 8955, 9657, 16095, 17313, 22089, 26865, 28855, 28971, 36815, 48285, 51939, 66267, 86565, 110445, 144855, 155817, 198801, 213527, 259695, 331335, 640581, 779085, 994005, 1067635, 1921743, 3202905, 5765229, 9608715, 28826145]

約数ペア:

[(1, 28826145), (3, 9608715), (5, 5765229), (9, 3202905), (15, 1921743), (27, 1067635), (29, 994005), (37, 779085), (45, 640581), (87, 331335), (111, 259695), (135, 213527), (145, 198801), (185, 155817), (199, 144855), (261, 110445), (333, 86565), (435, 66267), (555, 51939), (597, 48285), (783, 36815), (995, 28971), (999, 28855), (1073, 26865), (1305, 22089), (1665, 17313), (1791, 16095), (2985, 9657), (3219, 8955), (3915, 7363), (4995, 5771), (5365, 5373)]