21602840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{77153}}^1$

素因数の和:77171

約数の個数: 32

約数和(自身を含む): 55550880

約数和(自身を除く): 33948040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 77153, 154306, 308612, 385765, 540071, 617224, 771530, 1080142, 1543060, 2160284, 2700355, 3086120, 4320568, 5400710, 10801420, 21602840]

約数ペア:

[(1, 21602840), (2, 10801420), (4, 5400710), (5, 4320568), (7, 3086120), (8, 2700355), (10, 2160284), (14, 1543060), (20, 1080142), (28, 771530), (35, 617224), (40, 540071), (56, 385765), (70, 308612), (140, 154306), (280, 77153)]