1215825

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:98

約数の個数: 48

約数和(自身を含む): 2291520

約数和(自身を除く): 1075695

約数列:

[1, 3, 5, 13, 15, 25, 29, 39, 43, 65, 75, 87, 129, 145, 195, 215, 325, 377, 435, 559, 645, 725, 975, 1075, 1131, 1247, 1677, 1885, 2175, 2795, 3225, 3741, 5655, 6235, 8385, 9425, 13975, 16211, 18705, 28275, 31175, 41925, 48633, 81055, 93525, 243165, 405275, 1215825]

約数ペア:

[(1, 1215825), (3, 405275), (5, 243165), (13, 93525), (15, 81055), (25, 48633), (29, 41925), (39, 31175), (43, 28275), (65, 18705), (75, 16211), (87, 13975), (129, 9425), (145, 8385), (195, 6235), (215, 5655), (325, 3741), (377, 3225), (435, 2795), (559, 2175), (645, 1885), (725, 1677), (975, 1247), (1075, 1131)]