81910012

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1$

素因数の和:430

約数の個数: 48

約数和(自身を含む): 157338720

約数和(自身を除く): 75428708

約数列:

[1, 2, 4, 17, 34, 43, 68, 86, 109, 172, 218, 257, 436, 514, 731, 1028, 1462, 1853, 2924, 3706, 4369, 4687, 7412, 8738, 9374, 11051, 17476, 18748, 22102, 28013, 44204, 56026, 79679, 112052, 159358, 187867, 318716, 375734, 476221, 751468, 952442, 1204559, 1904884, 2409118, 4818236, 20477503, 40955006, 81910012]

約数ペア:

[(1, 81910012), (2, 40955006), (4, 20477503), (17, 4818236), (34, 2409118), (43, 1904884), (68, 1204559), (86, 952442), (109, 751468), (172, 476221), (218, 375734), (257, 318716), (436, 187867), (514, 159358), (731, 112052), (1028, 79679), (1462, 56026), (1853, 44204), (2924, 28013), (3706, 22102), (4369, 18748), (4687, 17476), (7412, 11051), (8738, 9374)]