20710879

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{23}}^2\times {\mathrm{47}}^1$

素因数の和:124

約数の個数: 36

約数和(自身を含む): 27234144

約数和(自身を除く): 6523265

約数列:

[1, 7, 17, 23, 47, 49, 119, 161, 329, 391, 529, 799, 833, 1081, 1127, 2303, 2737, 3703, 5593, 7567, 8993, 18377, 19159, 24863, 25921, 39151, 52969, 62951, 128639, 174041, 422671, 440657, 900473, 1218287, 2958697, 20710879]

約数ペア:

[(1, 20710879), (7, 2958697), (17, 1218287), (23, 900473), (47, 440657), (49, 422671), (119, 174041), (161, 128639), (329, 62951), (391, 52969), (529, 39151), (799, 25921), (833, 24863), (1081, 19159), (1127, 18377), (2303, 8993), (2737, 7567), (3703, 5593)]