12123580

素因数分解:

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

素因数の和:251

約数の個数: 72

約数和(自身を含む): 30164400

約数和(自身を除く): 18040820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 89, 98, 139, 140, 178, 196, 245, 278, 356, 445, 490, 556, 623, 695, 890, 973, 980, 1246, 1390, 1780, 1946, 2492, 2780, 3115, 3892, 4361, 4865, 6230, 6811, 8722, 9730, 12371, 12460, 13622, 17444, 19460, 21805, 24742, 27244, 34055, 43610, 49484, 61855, 68110, 86597, 87220, 123710, 136220, 173194, 247420, 346388, 432985, 606179, 865970, 1212358, 1731940, 2424716, 3030895, 6061790, 12123580]

約数ペア:

[(1, 12123580), (2, 6061790), (4, 3030895), (5, 2424716), (7, 1731940), (10, 1212358), (14, 865970), (20, 606179), (28, 432985), (35, 346388), (49, 247420), (70, 173194), (89, 136220), (98, 123710), (139, 87220), (140, 86597), (178, 68110), (196, 61855), (245, 49484), (278, 43610), (356, 34055), (445, 27244), (490, 24742), (556, 21805), (623, 19460), (695, 17444), (890, 13622), (973, 12460), (980, 12371), (1246, 9730), (1390, 8722), (1780, 6811), (1946, 6230), (2492, 4865), (2780, 4361), (3115, 3892)]