71977720

素因数分解:

$2^3\times 5^1\times {\mathrm{1303}}^1\times {\mathrm{1381}}^1$

素因数の和:2695

約数の個数: 32

約数和(自身を含む): 162191520

約数和(自身を除く): 90213800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1303, 1381, 2606, 2762, 5212, 5524, 6515, 6905, 10424, 11048, 13030, 13810, 26060, 27620, 52120, 55240, 1799443, 3598886, 7197772, 8997215, 14395544, 17994430, 35988860, 71977720]

約数ペア:

[(1, 71977720), (2, 35988860), (4, 17994430), (5, 14395544), (8, 8997215), (10, 7197772), (20, 3598886), (40, 1799443), (1303, 55240), (1381, 52120), (2606, 27620), (2762, 26060), (5212, 13810), (5524, 13030), (6515, 11048), (6905, 10424)]