80740880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{439}}^1$

素因数の和:493

約数の個数: 120

約数和(自身を含む): 217694400

約数和(自身を除く): 136953520

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 38, 40, 44, 55, 76, 80, 88, 95, 110, 121, 152, 176, 190, 209, 220, 242, 304, 380, 418, 439, 440, 484, 605, 760, 836, 878, 880, 968, 1045, 1210, 1520, 1672, 1756, 1936, 2090, 2195, 2299, 2420, 3344, 3512, 4180, 4390, 4598, 4829, 4840, 7024, 8341, 8360, 8780, 9196, 9658, 9680, 11495, 16682, 16720, 17560, 18392, 19316, 22990, 24145, 33364, 35120, 36784, 38632, 41705, 45980, 48290, 53119, 66728, 77264, 83410, 91751, 91960, 96580, 106238, 133456, 166820, 183502, 183920, 193160, 212476, 265595, 333640, 367004, 386320, 424952, 458755, 531190, 667280, 734008, 849904, 917510, 1009261, 1062380, 1468016, 1835020, 2018522, 2124760, 3670040, 4037044, 4249520, 5046305, 7340080, 8074088, 10092610, 16148176, 20185220, 40370440, 80740880]

約数ペア:

[(1, 80740880), (2, 40370440), (4, 20185220), (5, 16148176), (8, 10092610), (10, 8074088), (11, 7340080), (16, 5046305), (19, 4249520), (20, 4037044), (22, 3670040), (38, 2124760), (40, 2018522), (44, 1835020), (55, 1468016), (76, 1062380), (80, 1009261), (88, 917510), (95, 849904), (110, 734008), (121, 667280), (152, 531190), (176, 458755), (190, 424952), (209, 386320), (220, 367004), (242, 333640), (304, 265595), (380, 212476), (418, 193160), (439, 183920), (440, 183502), (484, 166820), (605, 133456), (760, 106238), (836, 96580), (878, 91960), (880, 91751), (968, 83410), (1045, 77264), (1210, 66728), (1520, 53119), (1672, 48290), (1756, 45980), (1936, 41705), (2090, 38632), (2195, 36784), (2299, 35120), (2420, 33364), (3344, 24145), (3512, 22990), (4180, 19316), (4390, 18392), (4598, 17560), (4829, 16720), (4840, 16682), (7024, 11495), (8341, 9680), (8360, 9658), (8780, 9196)]