80918420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{8971}}^1$

素因数の和:9032

約数の個数: 48

約数和(自身を含む): 189919296

約数和(自身を除く): 109000876

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 205, 220, 410, 451, 820, 902, 1804, 2255, 4510, 8971, 9020, 17942, 35884, 44855, 89710, 98681, 179420, 197362, 367811, 394724, 493405, 735622, 986810, 1471244, 1839055, 1973620, 3678110, 4045921, 7356220, 8091842, 16183684, 20229605, 40459210, 80918420]

約数ペア:

[(1, 80918420), (2, 40459210), (4, 20229605), (5, 16183684), (10, 8091842), (11, 7356220), (20, 4045921), (22, 3678110), (41, 1973620), (44, 1839055), (55, 1471244), (82, 986810), (110, 735622), (164, 493405), (205, 394724), (220, 367811), (410, 197362), (451, 179420), (820, 98681), (902, 89710), (1804, 44855), (2255, 35884), (4510, 17942), (8971, 9020)]