21270470

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{1249}}^1$

素因数の和:1400

約数の個数: 32

約数和(自身を含む): 41580000

約数和(自身を除く): 20309530

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 131, 262, 655, 1249, 1310, 1703, 2498, 3406, 6245, 8515, 12490, 16237, 17030, 32474, 81185, 162370, 163619, 327238, 818095, 1636190, 2127047, 4254094, 10635235, 21270470]

約数ペア:

[(1, 21270470), (2, 10635235), (5, 4254094), (10, 2127047), (13, 1636190), (26, 818095), (65, 327238), (130, 163619), (131, 162370), (262, 81185), (655, 32474), (1249, 17030), (1310, 16237), (1703, 12490), (2498, 8515), (3406, 6245)]