18281620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1949}}^1$

素因数の和:2032

約数の個数: 48

約数和(自身を含む): 44553600

約数和(自身を除く): 26271980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 67, 70, 134, 140, 268, 335, 469, 670, 938, 1340, 1876, 1949, 2345, 3898, 4690, 7796, 9380, 9745, 13643, 19490, 27286, 38980, 54572, 68215, 130583, 136430, 261166, 272860, 522332, 652915, 914081, 1305830, 1828162, 2611660, 3656324, 4570405, 9140810, 18281620]

約数ペア:

[(1, 18281620), (2, 9140810), (4, 4570405), (5, 3656324), (7, 2611660), (10, 1828162), (14, 1305830), (20, 914081), (28, 652915), (35, 522332), (67, 272860), (70, 261166), (134, 136430), (140, 130583), (268, 68215), (335, 54572), (469, 38980), (670, 27286), (938, 19490), (1340, 13643), (1876, 9745), (1949, 9380), (2345, 7796), (3898, 4690)]