31155460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1601}}^1$

素因数の和:1756

約数の個数: 48

約数和(自身を含む): 75358080

約数和(自身を除く): 44202620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1390, 1601, 1946, 2780, 3202, 3892, 4865, 6404, 8005, 9730, 11207, 16010, 19460, 22414, 32020, 44828, 56035, 112070, 222539, 224140, 445078, 890156, 1112695, 1557773, 2225390, 3115546, 4450780, 6231092, 7788865, 15577730, 31155460]

約数ペア:

[(1, 31155460), (2, 15577730), (4, 7788865), (5, 6231092), (7, 4450780), (10, 3115546), (14, 2225390), (20, 1557773), (28, 1112695), (35, 890156), (70, 445078), (139, 224140), (140, 222539), (278, 112070), (556, 56035), (695, 44828), (973, 32020), (1390, 22414), (1601, 19460), (1946, 16010), (2780, 11207), (3202, 9730), (3892, 8005), (4865, 6404)]