2977940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{239}}^1$

素因数の和:344

約数の個数: 48

約数和(自身を含む): 7257600

約数和(自身を除く): 4279660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 140, 178, 239, 356, 445, 478, 623, 890, 956, 1195, 1246, 1673, 1780, 2390, 2492, 3115, 3346, 4780, 6230, 6692, 8365, 12460, 16730, 21271, 33460, 42542, 85084, 106355, 148897, 212710, 297794, 425420, 595588, 744485, 1488970, 2977940]

約数ペア:

[(1, 2977940), (2, 1488970), (4, 744485), (5, 595588), (7, 425420), (10, 297794), (14, 212710), (20, 148897), (28, 106355), (35, 85084), (70, 42542), (89, 33460), (140, 21271), (178, 16730), (239, 12460), (356, 8365), (445, 6692), (478, 6230), (623, 4780), (890, 3346), (956, 3115), (1195, 2492), (1246, 2390), (1673, 1780)]