31311140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1609}}^1$

素因数の和:1764

約数の個数: 48

約数和(自身を含む): 75734400

約数和(自身を除く): 44423260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1390, 1609, 1946, 2780, 3218, 3892, 4865, 6436, 8045, 9730, 11263, 16090, 19460, 22526, 32180, 45052, 56315, 112630, 223651, 225260, 447302, 894604, 1118255, 1565557, 2236510, 3131114, 4473020, 6262228, 7827785, 15655570, 31311140]

約数ペア:

[(1, 31311140), (2, 15655570), (4, 7827785), (5, 6262228), (7, 4473020), (10, 3131114), (14, 2236510), (20, 1565557), (28, 1118255), (35, 894604), (70, 447302), (139, 225260), (140, 223651), (278, 112630), (556, 56315), (695, 45052), (973, 32180), (1390, 22526), (1609, 19460), (1946, 16090), (2780, 11263), (3218, 9730), (3892, 8045), (4865, 6436)]