20302340

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 43982400

約数和(自身を除く): 23680060

約数列:

[1, 2, 4, 5, 10, 20, 67, 109, 134, 139, 218, 268, 278, 335, 436, 545, 556, 670, 695, 1090, 1340, 1390, 2180, 2780, 7303, 9313, 14606, 15151, 18626, 29212, 30302, 36515, 37252, 46565, 60604, 73030, 75755, 93130, 146060, 151510, 186260, 303020, 1015117, 2030234, 4060468, 5075585, 10151170, 20302340]

約数ペア:

[(1, 20302340), (2, 10151170), (4, 5075585), (5, 4060468), (10, 2030234), (20, 1015117), (67, 303020), (109, 186260), (134, 151510), (139, 146060), (218, 93130), (268, 75755), (278, 73030), (335, 60604), (436, 46565), (545, 37252), (556, 36515), (670, 30302), (695, 29212), (1090, 18626), (1340, 15151), (1390, 14606), (2180, 9313), (2780, 7303)]