21478128

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{659}}^1$

素因数の和:774

約数の個数: 80

約数和(自身を含む): 64162560

約数和(自身を除く): 42684432

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 84, 97, 112, 168, 194, 291, 336, 388, 582, 659, 679, 776, 1164, 1318, 1358, 1552, 1977, 2037, 2328, 2636, 2716, 3954, 4074, 4613, 4656, 5272, 5432, 7908, 8148, 9226, 10544, 10864, 13839, 15816, 16296, 18452, 27678, 31632, 32592, 36904, 55356, 63923, 73808, 110712, 127846, 191769, 221424, 255692, 383538, 447461, 511384, 767076, 894922, 1022768, 1342383, 1534152, 1789844, 2684766, 3068304, 3579688, 5369532, 7159376, 10739064, 21478128]

約数ペア:

[(1, 21478128), (2, 10739064), (3, 7159376), (4, 5369532), (6, 3579688), (7, 3068304), (8, 2684766), (12, 1789844), (14, 1534152), (16, 1342383), (21, 1022768), (24, 894922), (28, 767076), (42, 511384), (48, 447461), (56, 383538), (84, 255692), (97, 221424), (112, 191769), (168, 127846), (194, 110712), (291, 73808), (336, 63923), (388, 55356), (582, 36904), (659, 32592), (679, 31632), (776, 27678), (1164, 18452), (1318, 16296), (1358, 15816), (1552, 13839), (1977, 10864), (2037, 10544), (2328, 9226), (2636, 8148), (2716, 7908), (3954, 5432), (4074, 5272), (4613, 4656)]