28218260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{3803}}^1$

素因数の和:3872

約数の個数: 48

約数和(自身を含む): 69019776

約数和(自身を除く): 40801516

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 53, 70, 106, 140, 212, 265, 371, 530, 742, 1060, 1484, 1855, 3710, 3803, 7420, 7606, 15212, 19015, 26621, 38030, 53242, 76060, 106484, 133105, 201559, 266210, 403118, 532420, 806236, 1007795, 1410913, 2015590, 2821826, 4031180, 5643652, 7054565, 14109130, 28218260]

約数ペア:

[(1, 28218260), (2, 14109130), (4, 7054565), (5, 5643652), (7, 4031180), (10, 2821826), (14, 2015590), (20, 1410913), (28, 1007795), (35, 806236), (53, 532420), (70, 403118), (106, 266210), (140, 201559), (212, 133105), (265, 106484), (371, 76060), (530, 53242), (742, 38030), (1060, 26621), (1484, 19015), (1855, 15212), (3710, 7606), (3803, 7420)]