18961715

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{199}}^1$

素因数の和:299

約数の個数: 32

約数和(自身を含む): 25920000

約数和(自身を除く): 6958285

約数列:

[1, 5, 17, 19, 59, 85, 95, 199, 295, 323, 995, 1003, 1121, 1615, 3383, 3781, 5015, 5605, 11741, 16915, 18905, 19057, 58705, 64277, 95285, 199597, 223079, 321385, 997985, 1115395, 3792343, 18961715]

約数ペア:

[(1, 18961715), (5, 3792343), (17, 1115395), (19, 997985), (59, 321385), (85, 223079), (95, 199597), (199, 95285), (295, 64277), (323, 58705), (995, 19057), (1003, 18905), (1121, 16915), (1615, 11741), (3383, 5605), (3781, 5015)]