18742075

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:268

約数の個数: 48

約数和(自身を含む): 28391040

約数和(自身を除く): 9648965

約数列:

[1, 5, 11, 17, 19, 25, 55, 85, 95, 187, 209, 211, 275, 323, 425, 475, 935, 1045, 1055, 1615, 2321, 3553, 3587, 4009, 4675, 5225, 5275, 8075, 11605, 17765, 17935, 20045, 39457, 44099, 58025, 68153, 88825, 89675, 100225, 197285, 220495, 340765, 749683, 986425, 1102475, 1703825, 3748415, 18742075]

約数ペア:

[(1, 18742075), (5, 3748415), (11, 1703825), (17, 1102475), (19, 986425), (25, 749683), (55, 340765), (85, 220495), (95, 197285), (187, 100225), (209, 89675), (211, 88825), (275, 68153), (323, 58025), (425, 44099), (475, 39457), (935, 20045), (1045, 17935), (1055, 17765), (1615, 11605), (2321, 8075), (3553, 5275), (3587, 5225), (4009, 4675)]