18891369

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{569}}^1$

素因数の和:630

約数の個数: 48

約数和(自身を含む): 34145280

約数和(自身を除く): 15253911

約数列:

[1, 3, 7, 9, 17, 21, 31, 51, 63, 93, 119, 153, 217, 279, 357, 527, 569, 651, 1071, 1581, 1707, 1953, 3689, 3983, 4743, 5121, 9673, 11067, 11949, 17639, 29019, 33201, 35847, 52917, 67711, 87057, 123473, 158751, 203133, 299863, 370419, 609399, 899589, 1111257, 2099041, 2698767, 6297123, 18891369]

約数ペア:

[(1, 18891369), (3, 6297123), (7, 2698767), (9, 2099041), (17, 1111257), (21, 899589), (31, 609399), (51, 370419), (63, 299863), (93, 203133), (119, 158751), (153, 123473), (217, 87057), (279, 67711), (357, 52917), (527, 35847), (569, 33201), (651, 29019), (1071, 17639), (1581, 11949), (1707, 11067), (1953, 9673), (3689, 5121), (3983, 4743)]