21348875

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:224

約数の個数: 32

約数和(自身を含む): 28641600

約数和(自身を除く): 7292725

約数列:

[1, 5, 19, 25, 89, 95, 101, 125, 445, 475, 505, 1691, 1919, 2225, 2375, 2525, 8455, 8989, 9595, 11125, 12625, 42275, 44945, 47975, 170791, 211375, 224725, 239875, 853955, 1123625, 4269775, 21348875]

約数ペア:

[(1, 21348875), (5, 4269775), (19, 1123625), (25, 853955), (89, 239875), (95, 224725), (101, 211375), (125, 170791), (445, 47975), (475, 44945), (505, 42275), (1691, 12625), (1919, 11125), (2225, 9595), (2375, 8989), (2525, 8455)]