2179708240

素因数分解:

$2^4\times 5^1\times {\mathrm{409}}^1\times {\mathrm{66617}}^1$

素因数の和:67039

約数の個数: 40

約数和(自身を含む): 5080288680

約数和(自身を除く): 2900580440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 409, 818, 1636, 2045, 3272, 4090, 6544, 8180, 16360, 32720, 66617, 133234, 266468, 333085, 532936, 666170, 1065872, 1332340, 2664680, 5329360, 27246353, 54492706, 108985412, 136231765, 217970824, 272463530, 435941648, 544927060, 1089854120, 2179708240]

約数ペア:

[(1, 2179708240), (2, 1089854120), (4, 544927060), (5, 435941648), (8, 272463530), (10, 217970824), (16, 136231765), (20, 108985412), (40, 54492706), (80, 27246353), (409, 5329360), (818, 2664680), (1636, 1332340), (2045, 1065872), (3272, 666170), (4090, 532936), (6544, 333085), (8180, 266468), (16360, 133234), (32720, 66617)]