21098840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{75353}}^1$

素因数の和:75371

約数の個数: 32

約数和(自身を含む): 54254880

約数和(自身を除く): 33156040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 75353, 150706, 301412, 376765, 527471, 602824, 753530, 1054942, 1507060, 2109884, 2637355, 3014120, 4219768, 5274710, 10549420, 21098840]

約数ペア:

[(1, 21098840), (2, 10549420), (4, 5274710), (5, 4219768), (7, 3014120), (8, 2637355), (10, 2109884), (14, 1507060), (20, 1054942), (28, 753530), (35, 602824), (40, 527471), (56, 376765), (70, 301412), (140, 150706), (280, 75353)]