28159516

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{353}}^1$

素因数の和:419

約数の個数: 72

約数和(自身を含む): 64408176

約数和(自身を除く): 36248660

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 37, 44, 49, 74, 77, 98, 148, 154, 196, 259, 308, 353, 407, 518, 539, 706, 814, 1036, 1078, 1412, 1628, 1813, 2156, 2471, 2849, 3626, 3883, 4942, 5698, 7252, 7766, 9884, 11396, 13061, 15532, 17297, 19943, 26122, 27181, 34594, 39886, 52244, 54362, 69188, 79772, 91427, 108724, 143671, 182854, 190267, 287342, 365708, 380534, 574684, 639989, 761068, 1005697, 1279978, 2011394, 2559956, 4022788, 7039879, 14079758, 28159516]

約数ペア:

[(1, 28159516), (2, 14079758), (4, 7039879), (7, 4022788), (11, 2559956), (14, 2011394), (22, 1279978), (28, 1005697), (37, 761068), (44, 639989), (49, 574684), (74, 380534), (77, 365708), (98, 287342), (148, 190267), (154, 182854), (196, 143671), (259, 108724), (308, 91427), (353, 79772), (407, 69188), (518, 54362), (539, 52244), (706, 39886), (814, 34594), (1036, 27181), (1078, 26122), (1412, 19943), (1628, 17297), (1813, 15532), (2156, 13061), (2471, 11396), (2849, 9884), (3626, 7766), (3883, 7252), (4942, 5698)]