1731940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 4233600

約数和(自身を除く): 2501660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 139, 140, 178, 278, 356, 445, 556, 623, 695, 890, 973, 1246, 1390, 1780, 1946, 2492, 2780, 3115, 3892, 4865, 6230, 9730, 12371, 12460, 19460, 24742, 49484, 61855, 86597, 123710, 173194, 247420, 346388, 432985, 865970, 1731940]

約数ペア:

[(1, 1731940), (2, 865970), (4, 432985), (5, 346388), (7, 247420), (10, 173194), (14, 123710), (20, 86597), (28, 61855), (35, 49484), (70, 24742), (89, 19460), (139, 12460), (140, 12371), (178, 9730), (278, 6230), (356, 4865), (445, 3892), (556, 3115), (623, 2780), (695, 2492), (890, 1946), (973, 1780), (1246, 1390)]