28668735

素因数分解:

$3^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{997}}^1$

素因数の和:1085

約数の個数: 40

約数和(自身を含む): 52167456

約数和(自身を除く): 23498721

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 81, 135, 213, 355, 405, 639, 997, 1065, 1917, 2991, 3195, 4985, 5751, 8973, 9585, 14955, 26919, 28755, 44865, 70787, 80757, 134595, 212361, 353935, 403785, 637083, 1061805, 1911249, 3185415, 5733747, 9556245, 28668735]

約数ペア:

[(1, 28668735), (3, 9556245), (5, 5733747), (9, 3185415), (15, 1911249), (27, 1061805), (45, 637083), (71, 403785), (81, 353935), (135, 212361), (213, 134595), (355, 80757), (405, 70787), (639, 44865), (997, 28755), (1065, 26919), (1917, 14955), (2991, 9585), (3195, 8973), (4985, 5751)]