28198775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^2\times {\mathrm{61}}^1$

素因数の和:164

約数の個数: 36

約数和(自身を含む): 39739272

約数和(自身を除く): 11540497

約数列:

[1, 5, 11, 25, 41, 55, 61, 205, 275, 305, 451, 671, 1025, 1525, 1681, 2255, 2501, 3355, 8405, 11275, 12505, 16775, 18491, 27511, 42025, 62525, 92455, 102541, 137555, 462275, 512705, 687775, 1127951, 2563525, 5639755, 28198775]

約数ペア:

[(1, 28198775), (5, 5639755), (11, 2563525), (25, 1127951), (41, 687775), (55, 512705), (61, 462275), (205, 137555), (275, 102541), (305, 92455), (451, 62525), (671, 42025), (1025, 27511), (1525, 18491), (1681, 16775), (2255, 12505), (2501, 11275), (3355, 8405)]