16998725

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1$

素因数の和:134

約数の個数: 48

約数和(自身を含む): 24427008

約数和(自身を除く): 7428283

約数列:

[1, 5, 17, 23, 25, 37, 47, 85, 115, 185, 235, 391, 425, 575, 629, 799, 851, 925, 1081, 1175, 1739, 1955, 3145, 3995, 4255, 5405, 8695, 9775, 14467, 15725, 18377, 19975, 21275, 27025, 29563, 39997, 43475, 72335, 91885, 147815, 199985, 361675, 459425, 679949, 739075, 999925, 3399745, 16998725]

約数ペア:

[(1, 16998725), (5, 3399745), (17, 999925), (23, 739075), (25, 679949), (37, 459425), (47, 361675), (85, 199985), (115, 147815), (185, 91885), (235, 72335), (391, 43475), (425, 39997), (575, 29563), (629, 27025), (799, 21275), (851, 19975), (925, 18377), (1081, 15725), (1175, 14467), (1739, 9775), (1955, 8695), (3145, 5405), (3995, 4255)]