28320890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{1663}}^1$

素因数の和:1814

約数の個数: 32

約数和(自身を含む): 55351296

約数和(自身を除く): 27030406

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 131, 262, 655, 1310, 1663, 1703, 3326, 3406, 8315, 8515, 16630, 17030, 21619, 43238, 108095, 216190, 217853, 435706, 1089265, 2178530, 2832089, 5664178, 14160445, 28320890]

約数ペア:

[(1, 28320890), (2, 14160445), (5, 5664178), (10, 2832089), (13, 2178530), (26, 1089265), (65, 435706), (130, 217853), (131, 216190), (262, 108095), (655, 43238), (1310, 21619), (1663, 17030), (1703, 16630), (3326, 8515), (3406, 8315)]