20812407

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{211}}^1$

素因数の和:300

約数の個数: 48

約数和(自身を含む): 35961984

約数和(自身を除く): 15149577

約数列:

[1, 3, 7, 11, 21, 33, 49, 61, 77, 147, 183, 211, 231, 427, 539, 633, 671, 1281, 1477, 1617, 2013, 2321, 2989, 4431, 4697, 6963, 8967, 10339, 12871, 14091, 16247, 31017, 32879, 38613, 48741, 90097, 98637, 113729, 141581, 270291, 341187, 424743, 630679, 991067, 1892037, 2973201, 6937469, 20812407]

約数ペア:

[(1, 20812407), (3, 6937469), (7, 2973201), (11, 1892037), (21, 991067), (33, 630679), (49, 424743), (61, 341187), (77, 270291), (147, 141581), (183, 113729), (211, 98637), (231, 90097), (427, 48741), (539, 38613), (633, 32879), (671, 31017), (1281, 16247), (1477, 14091), (1617, 12871), (2013, 10339), (2321, 8967), (2989, 6963), (4431, 4697)]