28278315

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1$

素因数の和:202

約数の個数: 80

約数和(自身を含む): 56349216

約数和(自身を除く): 28070901

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 41, 45, 65, 81, 117, 123, 131, 135, 195, 205, 351, 369, 393, 405, 533, 585, 615, 655, 1053, 1107, 1179, 1599, 1703, 1755, 1845, 1965, 2665, 3321, 3537, 4797, 5109, 5265, 5371, 5535, 5895, 7995, 8515, 10611, 14391, 15327, 16113, 16605, 17685, 23985, 25545, 26855, 43173, 45981, 48339, 53055, 69823, 71955, 76635, 80565, 137943, 145017, 209469, 215865, 229905, 241695, 349115, 435051, 628407, 689715, 725085, 1047345, 1885221, 2175255, 3142035, 5655663, 9426105, 28278315]

約数ペア:

[(1, 28278315), (3, 9426105), (5, 5655663), (9, 3142035), (13, 2175255), (15, 1885221), (27, 1047345), (39, 725085), (41, 689715), (45, 628407), (65, 435051), (81, 349115), (117, 241695), (123, 229905), (131, 215865), (135, 209469), (195, 145017), (205, 137943), (351, 80565), (369, 76635), (393, 71955), (405, 69823), (533, 53055), (585, 48339), (615, 45981), (655, 43173), (1053, 26855), (1107, 25545), (1179, 23985), (1599, 17685), (1703, 16605), (1755, 16113), (1845, 15327), (1965, 14391), (2665, 10611), (3321, 8515), (3537, 7995), (4797, 5895), (5109, 5535), (5265, 5371)]