20681265

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:210

約数の個数: 64

約数和(自身を含む): 39128832

約数和(自身を除く): 18447567

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 73, 85, 101, 165, 187, 219, 255, 303, 365, 505, 561, 803, 935, 1095, 1111, 1241, 1515, 1717, 2409, 2805, 3333, 3723, 4015, 5151, 5555, 6205, 7373, 8585, 12045, 13651, 16665, 18615, 18887, 22119, 25755, 36865, 40953, 56661, 68255, 81103, 94435, 110595, 125341, 204765, 243309, 283305, 376023, 405515, 626705, 1216545, 1378751, 1880115, 4136253, 6893755, 20681265]

約数ペア:

[(1, 20681265), (3, 6893755), (5, 4136253), (11, 1880115), (15, 1378751), (17, 1216545), (33, 626705), (51, 405515), (55, 376023), (73, 283305), (85, 243309), (101, 204765), (165, 125341), (187, 110595), (219, 94435), (255, 81103), (303, 68255), (365, 56661), (505, 40953), (561, 36865), (803, 25755), (935, 22119), (1095, 18887), (1111, 18615), (1241, 16665), (1515, 13651), (1717, 12045), (2409, 8585), (2805, 7373), (3333, 6205), (3723, 5555), (4015, 5151)]