18991282

素因数分解:

$2^1\times {\mathrm{31}}^2\times {\mathrm{41}}^1\times {\mathrm{241}}^1$

素因数の和:346

約数の個数: 24

約数和(自身を含む): 30278556

約数和(自身を除く): 11287274

約数列:

[1, 2, 31, 41, 62, 82, 241, 482, 961, 1271, 1922, 2542, 7471, 9881, 14942, 19762, 39401, 78802, 231601, 306311, 463202, 612622, 9495641, 18991282]

約数ペア:

[(1, 18991282), (2, 9495641), (31, 612622), (41, 463202), (62, 306311), (82, 231601), (241, 78802), (482, 39401), (961, 19762), (1271, 14942), (1922, 9881), (2542, 7471)]