18840488

素因数分解:

$2^3\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{281}}^1$

素因数の和:350

約数の個数: 48

約数和(自身を含む): 38958300

約数和(自身を除く): 20117812

約数列:

[1, 2, 4, 8, 17, 29, 34, 58, 68, 116, 136, 232, 281, 289, 493, 562, 578, 986, 1124, 1156, 1972, 2248, 2312, 3944, 4777, 8149, 8381, 9554, 16298, 16762, 19108, 32596, 33524, 38216, 65192, 67048, 81209, 138533, 162418, 277066, 324836, 554132, 649672, 1108264, 2355061, 4710122, 9420244, 18840488]

約数ペア:

[(1, 18840488), (2, 9420244), (4, 4710122), (8, 2355061), (17, 1108264), (29, 649672), (34, 554132), (58, 324836), (68, 277066), (116, 162418), (136, 138533), (232, 81209), (281, 67048), (289, 65192), (493, 38216), (562, 33524), (578, 32596), (986, 19108), (1124, 16762), (1156, 16298), (1972, 9554), (2248, 8381), (2312, 8149), (3944, 4777)]