21259750

素因数分解:

$2^1\times 5^3\times {\mathrm{277}}^1\times {\mathrm{307}}^1$

素因数の和:601

約数の個数: 32

約数和(自身を含む): 40072032

約数和(自身を除く): 18812282

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 277, 307, 554, 614, 1385, 1535, 2770, 3070, 6925, 7675, 13850, 15350, 34625, 38375, 69250, 76750, 85039, 170078, 425195, 850390, 2125975, 4251950, 10629875, 21259750]

約数ペア:

[(1, 21259750), (2, 10629875), (5, 4251950), (10, 2125975), (25, 850390), (50, 425195), (125, 170078), (250, 85039), (277, 76750), (307, 69250), (554, 38375), (614, 34625), (1385, 15350), (1535, 13850), (2770, 7675), (3070, 6925)]