20784865998

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{197}}^1\times {\mathrm{2557}}^1$

素因数の和:2818

約数の個数: 96

約数和(自身を含む): 47054389536

約数和(自身を除く): 26269523538

約数列:

[1, 2, 3, 6, 13, 23, 26, 39, 46, 69, 78, 138, 197, 299, 394, 529, 591, 598, 897, 1058, 1182, 1587, 1794, 2557, 2561, 3174, 4531, 5114, 5122, 6877, 7671, 7683, 9062, 13593, 13754, 15342, 15366, 20631, 27186, 33241, 41262, 58811, 58903, 66482, 99723, 104213, 117622, 117806, 176433, 176709, 199446, 208426, 312639, 352866, 353418, 503729, 625278, 764543, 1007458, 1352653, 1354769, 1511187, 1529086, 2293629, 2705306, 2709538, 3022374, 4057959, 4064307, 4587258, 6548477, 8115918, 8128614, 11585767, 13096954, 17584489, 19645431, 23171534, 34757301, 35168978, 39290862, 52753467, 69514602, 105506934, 150614971, 266472641, 301229942, 451844913, 532945282, 799417923, 903689826, 1598835846, 3464144333, 6928288666, 10392432999, 20784865998]

約数ペア:

[(1, 20784865998), (2, 10392432999), (3, 6928288666), (6, 3464144333), (13, 1598835846), (23, 903689826), (26, 799417923), (39, 532945282), (46, 451844913), (69, 301229942), (78, 266472641), (138, 150614971), (197, 105506934), (299, 69514602), (394, 52753467), (529, 39290862), (591, 35168978), (598, 34757301), (897, 23171534), (1058, 19645431), (1182, 17584489), (1587, 13096954), (1794, 11585767), (2557, 8128614), (2561, 8115918), (3174, 6548477), (4531, 4587258), (5114, 4064307), (5122, 4057959), (6877, 3022374), (7671, 2709538), (7683, 2705306), (9062, 2293629), (13593, 1529086), (13754, 1511187), (15342, 1354769), (15366, 1352653), (20631, 1007458), (27186, 764543), (33241, 625278), (41262, 503729), (58811, 353418), (58903, 352866), (66482, 312639), (99723, 208426), (104213, 199446), (117622, 176709), (117806, 176433)]