19980857552

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1\times {\mathrm{3499}}^1$

素因数の和:3964

約数の個数: 80

約数和(自身を含む): 41455680000

約数和(自身を除く): 21474822448

約数列:

[1, 2, 4, 8, 16, 29, 31, 58, 62, 116, 124, 232, 248, 397, 464, 496, 794, 899, 1588, 1798, 3176, 3499, 3596, 6352, 6998, 7192, 11513, 12307, 13996, 14384, 23026, 24614, 27992, 46052, 49228, 55984, 92104, 98456, 101471, 108469, 184208, 196912, 202942, 216938, 356903, 405884, 433876, 713806, 811768, 867752, 1389103, 1427612, 1623536, 1735504, 2778206, 2855224, 3145601, 5556412, 5710448, 6291202, 11112824, 12582404, 22225648, 25164808, 40283987, 43062193, 50329616, 80567974, 86124386, 161135948, 172248772, 322271896, 344497544, 644543792, 688995088, 1248803597, 2497607194, 4995214388, 9990428776, 19980857552]

約数ペア:

[(1, 19980857552), (2, 9990428776), (4, 4995214388), (8, 2497607194), (16, 1248803597), (29, 688995088), (31, 644543792), (58, 344497544), (62, 322271896), (116, 172248772), (124, 161135948), (232, 86124386), (248, 80567974), (397, 50329616), (464, 43062193), (496, 40283987), (794, 25164808), (899, 22225648), (1588, 12582404), (1798, 11112824), (3176, 6291202), (3499, 5710448), (3596, 5556412), (6352, 3145601), (6998, 2855224), (7192, 2778206), (11513, 1735504), (12307, 1623536), (13996, 1427612), (14384, 1389103), (23026, 867752), (24614, 811768), (27992, 713806), (46052, 433876), (49228, 405884), (55984, 356903), (92104, 216938), (98456, 202942), (101471, 196912), (108469, 184208)]