80263720

素因数分解:

$2^3\times 5^1\times {\mathrm{1381}}^1\times {\mathrm{1453}}^1$

素因数の和:2845

約数の個数: 32

約数和(自身を含む): 180848520

約数和(自身を除く): 100584800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1381, 1453, 2762, 2906, 5524, 5812, 6905, 7265, 11048, 11624, 13810, 14530, 27620, 29060, 55240, 58120, 2006593, 4013186, 8026372, 10032965, 16052744, 20065930, 40131860, 80263720]

約数ペア:

[(1, 80263720), (2, 40131860), (4, 20065930), (5, 16052744), (8, 10032965), (10, 8026372), (20, 4013186), (40, 2006593), (1381, 58120), (1453, 55240), (2762, 29060), (2906, 27620), (5524, 14530), (5812, 13810), (6905, 11624), (7265, 11048)]