645654224

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{661}}^1\times {\mathrm{1489}}^1$

素因数の和:2199

約数の個数: 40

約数和(自身を含む): 1284266760

約数和(自身を除く): 638612536

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 661, 1322, 1489, 2644, 2978, 5288, 5956, 10576, 11912, 23824, 27101, 54202, 61049, 108404, 122098, 216808, 244196, 433616, 488392, 976784, 984229, 1968458, 3936916, 7873832, 15747664, 40353389, 80706778, 161413556, 322827112, 645654224]

約数ペア:

[(1, 645654224), (2, 322827112), (4, 161413556), (8, 80706778), (16, 40353389), (41, 15747664), (82, 7873832), (164, 3936916), (328, 1968458), (656, 984229), (661, 976784), (1322, 488392), (1489, 433616), (2644, 244196), (2978, 216808), (5288, 122098), (5956, 108404), (10576, 61049), (11912, 54202), (23824, 27101)]