28172205

素因数分解:

$3^6\times 5^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1$

素因数の和:213

約数の個数: 56

約数和(自身を含む): 51939360

約数和(自身を除く): 23767155

約数列:

[1, 3, 5, 9, 15, 27, 45, 59, 81, 131, 135, 177, 243, 295, 393, 405, 531, 655, 729, 885, 1179, 1215, 1593, 1965, 2655, 3537, 3645, 4779, 5895, 7729, 7965, 10611, 14337, 17685, 23187, 23895, 31833, 38645, 43011, 53055, 69561, 71685, 95499, 115935, 159165, 208683, 215055, 347805, 477495, 626049, 1043415, 1878147, 3130245, 5634441, 9390735, 28172205]

約数ペア:

[(1, 28172205), (3, 9390735), (5, 5634441), (9, 3130245), (15, 1878147), (27, 1043415), (45, 626049), (59, 477495), (81, 347805), (131, 215055), (135, 208683), (177, 159165), (243, 115935), (295, 95499), (393, 71685), (405, 69561), (531, 53055), (655, 43011), (729, 38645), (885, 31833), (1179, 23895), (1215, 23187), (1593, 17685), (1965, 14337), (2655, 10611), (3537, 7965), (3645, 7729), (4779, 5895)]