21032925

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 36961920

約数和(自身を除く): 15928995

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 89, 115, 137, 267, 345, 411, 445, 575, 685, 1335, 1725, 2047, 2055, 2225, 3151, 3425, 6141, 6675, 9453, 10235, 10275, 12193, 15755, 30705, 36579, 47265, 51175, 60965, 78775, 153525, 182895, 236325, 280439, 304825, 841317, 914475, 1402195, 4206585, 7010975, 21032925]

約数ペア:

[(1, 21032925), (3, 7010975), (5, 4206585), (15, 1402195), (23, 914475), (25, 841317), (69, 304825), (75, 280439), (89, 236325), (115, 182895), (137, 153525), (267, 78775), (345, 60965), (411, 51175), (445, 47265), (575, 36579), (685, 30705), (1335, 15755), (1725, 12193), (2047, 10275), (2055, 10235), (2225, 9453), (3151, 6675), (3425, 6141)]