20507956

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{12007}}^1$

素因数の和:12079

約数の個数: 24

約数和(自身を含む): 41691776

約数和(自身を除く): 21183820

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1708, 12007, 24014, 48028, 84049, 168098, 336196, 732427, 1464854, 2929708, 5126989, 10253978, 20507956]

約数ペア:

[(1, 20507956), (2, 10253978), (4, 5126989), (7, 2929708), (14, 1464854), (28, 732427), (61, 336196), (122, 168098), (244, 84049), (427, 48028), (854, 24014), (1708, 12007)]