81397888

素因数分解:

$2^7\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4447}}^1$

素因数の和:4485

約数の個数: 64

約数和(自身を含む): 190552320

約数和(自身を除く): 109154432

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 32, 44, 52, 64, 88, 104, 128, 143, 176, 208, 286, 352, 416, 572, 704, 832, 1144, 1408, 1664, 2288, 4447, 4576, 8894, 9152, 17788, 18304, 35576, 48917, 57811, 71152, 97834, 115622, 142304, 195668, 231244, 284608, 391336, 462488, 569216, 635921, 782672, 924976, 1271842, 1565344, 1849952, 2543684, 3130688, 3699904, 5087368, 6261376, 7399808, 10174736, 20349472, 40698944, 81397888]

約数ペア:

[(1, 81397888), (2, 40698944), (4, 20349472), (8, 10174736), (11, 7399808), (13, 6261376), (16, 5087368), (22, 3699904), (26, 3130688), (32, 2543684), (44, 1849952), (52, 1565344), (64, 1271842), (88, 924976), (104, 782672), (128, 635921), (143, 569216), (176, 462488), (208, 391336), (286, 284608), (352, 231244), (416, 195668), (572, 142304), (704, 115622), (832, 97834), (1144, 71152), (1408, 57811), (1664, 48917), (2288, 35576), (4447, 18304), (4576, 17788), (8894, 9152)]