686131888

素因数分解:

$2^4\times {\mathrm{13}}^3\times {\mathrm{131}}^1\times {\mathrm{149}}^1$

素因数の和:327

約数の個数: 80

約数和(自身を含む): 1460844000

約数和(自身を除く): 774712112

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 131, 149, 169, 208, 262, 298, 338, 524, 596, 676, 1048, 1192, 1352, 1703, 1937, 2096, 2197, 2384, 2704, 3406, 3874, 4394, 6812, 7748, 8788, 13624, 15496, 17576, 19519, 22139, 25181, 27248, 30992, 35152, 39038, 44278, 50362, 78076, 88556, 100724, 156152, 177112, 201448, 253747, 287807, 312304, 327353, 354224, 402896, 507494, 575614, 654706, 1014988, 1151228, 1309412, 2029976, 2302456, 2618824, 3298711, 4059952, 4604912, 5237648, 6597422, 13194844, 26389688, 42883243, 52779376, 85766486, 171532972, 343065944, 686131888]

約数ペア:

[(1, 686131888), (2, 343065944), (4, 171532972), (8, 85766486), (13, 52779376), (16, 42883243), (26, 26389688), (52, 13194844), (104, 6597422), (131, 5237648), (149, 4604912), (169, 4059952), (208, 3298711), (262, 2618824), (298, 2302456), (338, 2029976), (524, 1309412), (596, 1151228), (676, 1014988), (1048, 654706), (1192, 575614), (1352, 507494), (1703, 402896), (1937, 354224), (2096, 327353), (2197, 312304), (2384, 287807), (2704, 253747), (3406, 201448), (3874, 177112), (4394, 156152), (6812, 100724), (7748, 88556), (8788, 78076), (13624, 50362), (15496, 44278), (17576, 39038), (19519, 35152), (22139, 30992), (25181, 27248)]