19047925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:142

約数の個数: 48

約数和(自身を含む): 27498240

約数和(自身を除く): 8450315

約数列:

[1, 5, 13, 25, 29, 43, 47, 65, 145, 215, 235, 325, 377, 559, 611, 725, 1075, 1175, 1247, 1363, 1885, 2021, 2795, 3055, 6235, 6815, 9425, 10105, 13975, 15275, 16211, 17719, 26273, 31175, 34075, 50525, 58609, 81055, 88595, 131365, 293045, 405275, 442975, 656825, 761917, 1465225, 3809585, 19047925]

約数ペア:

[(1, 19047925), (5, 3809585), (13, 1465225), (25, 761917), (29, 656825), (43, 442975), (47, 405275), (65, 293045), (145, 131365), (215, 88595), (235, 81055), (325, 58609), (377, 50525), (559, 34075), (611, 31175), (725, 26273), (1075, 17719), (1175, 16211), (1247, 15275), (1363, 13975), (1885, 10105), (2021, 9425), (2795, 6815), (3055, 6235)]