661738005

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{223}}^1\times {\mathrm{431}}^1$

素因数の和:688

約数の個数: 80

約数和(自身を含む): 1264564224

約数和(自身を除く): 602826219

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 223, 255, 405, 431, 459, 669, 765, 1115, 1293, 1377, 2007, 2155, 2295, 3345, 3791, 3879, 6021, 6465, 6885, 7327, 10035, 11373, 11637, 18063, 18955, 19395, 21981, 30105, 34119, 34911, 36635, 56865, 58185, 65943, 90315, 96113, 102357, 109905, 170595, 174555, 197829, 288339, 307071, 329715, 480565, 511785, 593487, 865017, 989145, 1441695, 1535355, 1633921, 2595051, 2967435, 4325085, 4901763, 7785153, 8169605, 12975255, 14705289, 24508815, 38925765, 44115867, 73526445, 132347601, 220579335, 661738005]

約数ペア:

[(1, 661738005), (3, 220579335), (5, 132347601), (9, 73526445), (15, 44115867), (17, 38925765), (27, 24508815), (45, 14705289), (51, 12975255), (81, 8169605), (85, 7785153), (135, 4901763), (153, 4325085), (223, 2967435), (255, 2595051), (405, 1633921), (431, 1535355), (459, 1441695), (669, 989145), (765, 865017), (1115, 593487), (1293, 511785), (1377, 480565), (2007, 329715), (2155, 307071), (2295, 288339), (3345, 197829), (3791, 174555), (3879, 170595), (6021, 109905), (6465, 102357), (6885, 96113), (7327, 90315), (10035, 65943), (11373, 58185), (11637, 56865), (18063, 36635), (18955, 34911), (19395, 34119), (21981, 30105)]