21092145

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{617}}^1$

素因数の和:721

約数の個数: 32

約数和(自身を含む): 35240832

約数和(自身を除く): 14148687

約数列:

[1, 3, 5, 15, 43, 53, 129, 159, 215, 265, 617, 645, 795, 1851, 2279, 3085, 6837, 9255, 11395, 26531, 32701, 34185, 79593, 98103, 132655, 163505, 397965, 490515, 1406143, 4218429, 7030715, 21092145]

約数ペア:

[(1, 21092145), (3, 7030715), (5, 4218429), (15, 1406143), (43, 490515), (53, 397965), (129, 163505), (159, 132655), (215, 98103), (265, 79593), (617, 34185), (645, 32701), (795, 26531), (1851, 11395), (2279, 9255), (3085, 6837)]