21280083

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^3\times {\mathrm{53}}^1$

素因数の和:136

約数の個数: 32

約数和(自身を含む): 32970240

約数和(自身を除く): 11690157

約数列:

[1, 3, 11, 23, 33, 53, 69, 159, 253, 529, 583, 759, 1219, 1587, 1749, 3657, 5819, 12167, 13409, 17457, 28037, 36501, 40227, 84111, 133837, 308407, 401511, 644851, 925221, 1934553, 7093361, 21280083]

約数ペア:

[(1, 21280083), (3, 7093361), (11, 1934553), (23, 925221), (33, 644851), (53, 401511), (69, 308407), (159, 133837), (253, 84111), (529, 40227), (583, 36501), (759, 28037), (1219, 17457), (1587, 13409), (1749, 12167), (3657, 5819)]