161781435

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{449}}^1$

素因数の和:637

約数の個数: 64

約数和(自身を含む): 307152000

約数和(自身を除く): 145370565

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 157, 255, 449, 459, 471, 765, 785, 1347, 1413, 2245, 2295, 2355, 2669, 4041, 4239, 6735, 7065, 7633, 8007, 12123, 13345, 20205, 21195, 22899, 24021, 38165, 40035, 60615, 68697, 70493, 72063, 114495, 120105, 206091, 211479, 343485, 352465, 360315, 634437, 1030455, 1057395, 1198381, 1903311, 3172185, 3595143, 5991905, 9516555, 10785429, 17975715, 32356287, 53927145, 161781435]

約数ペア:

[(1, 161781435), (3, 53927145), (5, 32356287), (9, 17975715), (15, 10785429), (17, 9516555), (27, 5991905), (45, 3595143), (51, 3172185), (85, 1903311), (135, 1198381), (153, 1057395), (157, 1030455), (255, 634437), (449, 360315), (459, 352465), (471, 343485), (765, 211479), (785, 206091), (1347, 120105), (1413, 114495), (2245, 72063), (2295, 70493), (2355, 68697), (2669, 60615), (4041, 40035), (4239, 38165), (6735, 24021), (7065, 22899), (7633, 21195), (8007, 20205), (12123, 13345)]