7978140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{349}}^1$

素因数の和:491

約数の個数: 72

約数和(自身を含む): 24460800

約数和(自身を除く): 16482660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 127, 180, 254, 349, 381, 508, 635, 698, 762, 1047, 1143, 1270, 1396, 1524, 1745, 1905, 2094, 2286, 2540, 3141, 3490, 3810, 4188, 4572, 5235, 5715, 6282, 6980, 7620, 10470, 11430, 12564, 15705, 20940, 22860, 31410, 44323, 62820, 88646, 132969, 177292, 221615, 265938, 398907, 443230, 531876, 664845, 797814, 886460, 1329690, 1595628, 1994535, 2659380, 3989070, 7978140]

約数ペア:

[(1, 7978140), (2, 3989070), (3, 2659380), (4, 1994535), (5, 1595628), (6, 1329690), (9, 886460), (10, 797814), (12, 664845), (15, 531876), (18, 443230), (20, 398907), (30, 265938), (36, 221615), (45, 177292), (60, 132969), (90, 88646), (127, 62820), (180, 44323), (254, 31410), (349, 22860), (381, 20940), (508, 15705), (635, 12564), (698, 11430), (762, 10470), (1047, 7620), (1143, 6980), (1270, 6282), (1396, 5715), (1524, 5235), (1745, 4572), (1905, 4188), (2094, 3810), (2286, 3490), (2540, 3141)]