19985325

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{6197}}^1$

素因数の和:6253

約数の個数: 24

約数和(自身を含む): 33816288

約数和(自身を除く): 13830963

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 215, 645, 1075, 3225, 6197, 18591, 30985, 92955, 154925, 266471, 464775, 799413, 1332355, 3997065, 6661775, 19985325]

約数ペア:

[(1, 19985325), (3, 6661775), (5, 3997065), (15, 1332355), (25, 799413), (43, 464775), (75, 266471), (129, 154925), (215, 92955), (645, 30985), (1075, 18591), (3225, 6197)]