215061539

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{211}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 287695872

約数和(自身を除く): 72634333

約数列:

[1, 7, 11, 31, 49, 61, 77, 211, 217, 341, 427, 539, 671, 1477, 1519, 1891, 2321, 2387, 2989, 4697, 6541, 10339, 12871, 13237, 16247, 16709, 20801, 32879, 45787, 71951, 90097, 92659, 113729, 141581, 145607, 320509, 399001, 503657, 630679, 991067, 1019249, 2793007, 3525599, 4389011, 6937469, 19551049, 30723077, 215061539]

約数ペア:

[(1, 215061539), (7, 30723077), (11, 19551049), (31, 6937469), (49, 4389011), (61, 3525599), (77, 2793007), (211, 1019249), (217, 991067), (341, 630679), (427, 503657), (539, 399001), (671, 320509), (1477, 145607), (1519, 141581), (1891, 113729), (2321, 92659), (2387, 90097), (2989, 71951), (4697, 45787), (6541, 32879), (10339, 20801), (12871, 16709), (13237, 16247)]