21011696128

素因数分解:

$2^9\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{9839}}^1$

素因数の和:9997

約数の個数: 80

約数和(自身を含む): 43405971840

約数和(自身を除く): 22394275712

約数列:

[1, 2, 4, 8, 16, 32, 43, 64, 86, 97, 128, 172, 194, 256, 344, 388, 512, 688, 776, 1376, 1552, 2752, 3104, 4171, 5504, 6208, 8342, 9839, 11008, 12416, 16684, 19678, 22016, 24832, 33368, 39356, 49664, 66736, 78712, 133472, 157424, 266944, 314848, 423077, 533888, 629696, 846154, 954383, 1067776, 1259392, 1692308, 1908766, 2135552, 2518784, 3384616, 3817532, 5037568, 6769232, 7635064, 13538464, 15270128, 27076928, 30540256, 41038469, 54153856, 61080512, 82076938, 108307712, 122161024, 164153876, 216615424, 244322048, 328307752, 488644096, 656615504, 1313231008, 2626462016, 5252924032, 10505848064, 21011696128]

約数ペア:

[(1, 21011696128), (2, 10505848064), (4, 5252924032), (8, 2626462016), (16, 1313231008), (32, 656615504), (43, 488644096), (64, 328307752), (86, 244322048), (97, 216615424), (128, 164153876), (172, 122161024), (194, 108307712), (256, 82076938), (344, 61080512), (388, 54153856), (512, 41038469), (688, 30540256), (776, 27076928), (1376, 15270128), (1552, 13538464), (2752, 7635064), (3104, 6769232), (4171, 5037568), (5504, 3817532), (6208, 3384616), (8342, 2518784), (9839, 2135552), (11008, 1908766), (12416, 1692308), (16684, 1259392), (19678, 1067776), (22016, 954383), (24832, 846154), (33368, 629696), (39356, 533888), (49664, 423077), (66736, 314848), (78712, 266944), (133472, 157424)]