21281854

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{307}}^1$

素因数の和:480

約数の個数: 32

約数和(自身を含む): 36723456

約数和(自身を除く): 15441602

約数列:

[1, 2, 11, 22, 23, 46, 137, 253, 274, 307, 506, 614, 1507, 3014, 3151, 3377, 6302, 6754, 7061, 14122, 34661, 42059, 69322, 77671, 84118, 155342, 462649, 925298, 967357, 1934714, 10640927, 21281854]

約数ペア:

[(1, 21281854), (2, 10640927), (11, 1934714), (22, 967357), (23, 925298), (46, 462649), (137, 155342), (253, 84118), (274, 77671), (307, 69322), (506, 42059), (614, 34661), (1507, 14122), (3014, 7061), (3151, 6754), (3377, 6302)]