20111535

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{257}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 36706176

約数和(自身を除く): 16594641

約数列:

[1, 3, 5, 9, 15, 37, 45, 47, 111, 141, 185, 235, 257, 333, 423, 555, 705, 771, 1285, 1665, 1739, 2115, 2313, 3855, 5217, 8695, 9509, 11565, 12079, 15651, 26085, 28527, 36237, 47545, 60395, 78255, 85581, 108711, 142635, 181185, 427905, 446923, 543555, 1340769, 2234615, 4022307, 6703845, 20111535]

約数ペア:

[(1, 20111535), (3, 6703845), (5, 4022307), (9, 2234615), (15, 1340769), (37, 543555), (45, 446923), (47, 427905), (111, 181185), (141, 142635), (185, 108711), (235, 85581), (257, 78255), (333, 60395), (423, 47545), (555, 36237), (705, 28527), (771, 26085), (1285, 15651), (1665, 12079), (1739, 11565), (2115, 9509), (2313, 8695), (3855, 5217)]