18965793

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{317}}^1$

素因数の和:382

約数の個数: 48

約数和(自身を含む): 33061824

約数和(自身を除く): 14096031

約数列:

[1, 3, 7, 11, 21, 33, 37, 49, 77, 111, 147, 231, 259, 317, 407, 539, 777, 951, 1221, 1617, 1813, 2219, 2849, 3487, 5439, 6657, 8547, 10461, 11729, 15533, 19943, 24409, 35187, 46599, 59829, 73227, 82103, 129019, 170863, 246309, 387057, 512589, 574721, 903133, 1724163, 2709399, 6321931, 18965793]

約数ペア:

[(1, 18965793), (3, 6321931), (7, 2709399), (11, 1724163), (21, 903133), (33, 574721), (37, 512589), (49, 387057), (77, 246309), (111, 170863), (147, 129019), (231, 82103), (259, 73227), (317, 59829), (407, 46599), (539, 35187), (777, 24409), (951, 19943), (1221, 15533), (1617, 11729), (1813, 10461), (2219, 8547), (2849, 6657), (3487, 5439)]