20688339

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{211}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 34801920

約数和(自身を除く): 14113581

約数列:

[1, 3, 7, 21, 23, 29, 49, 69, 87, 147, 161, 203, 211, 483, 609, 633, 667, 1127, 1421, 1477, 2001, 3381, 4263, 4431, 4669, 4853, 6119, 10339, 14007, 14559, 18357, 31017, 32683, 33971, 42833, 98049, 101913, 128499, 140737, 237797, 299831, 422211, 713391, 899493, 985159, 2955477, 6896113, 20688339]

約数ペア:

[(1, 20688339), (3, 6896113), (7, 2955477), (21, 985159), (23, 899493), (29, 713391), (49, 422211), (69, 299831), (87, 237797), (147, 140737), (161, 128499), (203, 101913), (211, 98049), (483, 42833), (609, 33971), (633, 32683), (667, 31017), (1127, 18357), (1421, 14559), (1477, 14007), (2001, 10339), (3381, 6119), (4263, 4853), (4431, 4669)]