656912984

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{263}}^1$

素因数の和:409

約数の個数: 128

約数和(自身を含む): 1575383040

約数和(自身を除く): 918470056

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 47, 52, 56, 73, 91, 94, 104, 146, 182, 188, 263, 292, 329, 364, 376, 511, 526, 584, 611, 658, 728, 949, 1022, 1052, 1222, 1316, 1841, 1898, 2044, 2104, 2444, 2632, 3419, 3431, 3682, 3796, 4088, 4277, 4888, 6643, 6838, 6862, 7364, 7592, 8554, 12361, 13286, 13676, 13724, 14728, 17108, 19199, 23933, 24017, 24722, 26572, 27352, 27448, 34216, 38398, 44603, 47866, 48034, 49444, 53144, 76796, 86527, 89206, 95732, 96068, 98888, 134393, 153592, 160693, 173054, 178412, 191464, 192136, 249587, 268786, 312221, 321386, 346108, 356824, 499174, 537572, 624442, 642772, 692216, 902353, 998348, 1075144, 1124851, 1248884, 1285544, 1747109, 1804706, 1996696, 2249702, 2497768, 3494218, 3609412, 4499404, 6316471, 6988436, 7218824, 8998808, 11730589, 12632942, 13976872, 23461178, 25265884, 46922356, 50531768, 82114123, 93844712, 164228246, 328456492, 656912984]

約数ペア:

[(1, 656912984), (2, 328456492), (4, 164228246), (7, 93844712), (8, 82114123), (13, 50531768), (14, 46922356), (26, 25265884), (28, 23461178), (47, 13976872), (52, 12632942), (56, 11730589), (73, 8998808), (91, 7218824), (94, 6988436), (104, 6316471), (146, 4499404), (182, 3609412), (188, 3494218), (263, 2497768), (292, 2249702), (329, 1996696), (364, 1804706), (376, 1747109), (511, 1285544), (526, 1248884), (584, 1124851), (611, 1075144), (658, 998348), (728, 902353), (949, 692216), (1022, 642772), (1052, 624442), (1222, 537572), (1316, 499174), (1841, 356824), (1898, 346108), (2044, 321386), (2104, 312221), (2444, 268786), (2632, 249587), (3419, 192136), (3431, 191464), (3682, 178412), (3796, 173054), (4088, 160693), (4277, 153592), (4888, 134393), (6643, 98888), (6838, 96068), (6862, 95732), (7364, 89206), (7592, 86527), (8554, 76796), (12361, 53144), (13286, 49444), (13676, 48034), (13724, 47866), (14728, 44603), (17108, 38398), (19199, 34216), (23933, 27448), (24017, 27352), (24722, 26572)]