21105766

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{787}}^1$

素因数の和:876

約数の個数: 32

約数和(自身を含む): 36764928

約数和(自身を除く): 15659162

約数列:

[1, 2, 11, 22, 23, 46, 53, 106, 253, 506, 583, 787, 1166, 1219, 1574, 2438, 8657, 13409, 17314, 18101, 26818, 36202, 41711, 83422, 199111, 398222, 458821, 917642, 959353, 1918706, 10552883, 21105766]

約数ペア:

[(1, 21105766), (2, 10552883), (11, 1918706), (22, 959353), (23, 917642), (46, 458821), (53, 398222), (106, 199111), (253, 83422), (506, 41711), (583, 36202), (787, 26818), (1166, 18101), (1219, 17314), (1574, 13409), (2438, 8657)]