16981041

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:166

約数の個数: 64

約数和(自身を含む): 30689280

約数和(自身を除く): 13708239

約数列:

[1, 3, 7, 11, 19, 21, 33, 53, 57, 73, 77, 133, 159, 209, 219, 231, 371, 399, 511, 583, 627, 803, 1007, 1113, 1387, 1463, 1533, 1749, 2409, 3021, 3869, 4081, 4161, 4389, 5621, 7049, 9709, 11077, 11607, 12243, 15257, 16863, 21147, 27083, 29127, 33231, 42559, 45771, 73511, 77539, 81249, 106799, 127677, 220533, 232617, 297913, 320397, 514577, 808621, 893739, 1543731, 2425863, 5660347, 16981041]

約数ペア:

[(1, 16981041), (3, 5660347), (7, 2425863), (11, 1543731), (19, 893739), (21, 808621), (33, 514577), (53, 320397), (57, 297913), (73, 232617), (77, 220533), (133, 127677), (159, 106799), (209, 81249), (219, 77539), (231, 73511), (371, 45771), (399, 42559), (511, 33231), (583, 29127), (627, 27083), (803, 21147), (1007, 16863), (1113, 15257), (1387, 12243), (1463, 11607), (1533, 11077), (1749, 9709), (2409, 7049), (3021, 5621), (3869, 4389), (4081, 4161)]