18234020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{937}}^1$

素因数の和:1092

約数の個数: 48

約数和(自身を含む): 44123520

約数和(自身を除く): 25889500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 937, 973, 1390, 1874, 1946, 2780, 3748, 3892, 4685, 4865, 6559, 9370, 9730, 13118, 18740, 19460, 26236, 32795, 65590, 130243, 131180, 260486, 520972, 651215, 911701, 1302430, 1823402, 2604860, 3646804, 4558505, 9117010, 18234020]

約数ペア:

[(1, 18234020), (2, 9117010), (4, 4558505), (5, 3646804), (7, 2604860), (10, 1823402), (14, 1302430), (20, 911701), (28, 651215), (35, 520972), (70, 260486), (139, 131180), (140, 130243), (278, 65590), (556, 32795), (695, 26236), (937, 19460), (973, 18740), (1390, 13118), (1874, 9730), (1946, 9370), (2780, 6559), (3748, 4865), (3892, 4685)]