221780020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{144013}}^1$

素因数の和:144040

約数の個数: 48

約数和(自身を含む): 580664448

約数和(自身を除く): 358884428

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 144013, 288026, 576052, 720065, 1008091, 1440130, 1584143, 2016182, 2880260, 3168286, 4032364, 5040455, 6336572, 7920715, 10080910, 11089001, 15841430, 20161820, 22178002, 31682860, 44356004, 55445005, 110890010, 221780020]

約数ペア:

[(1, 221780020), (2, 110890010), (4, 55445005), (5, 44356004), (7, 31682860), (10, 22178002), (11, 20161820), (14, 15841430), (20, 11089001), (22, 10080910), (28, 7920715), (35, 6336572), (44, 5040455), (55, 4032364), (70, 3168286), (77, 2880260), (110, 2016182), (140, 1584143), (154, 1440130), (220, 1008091), (308, 720065), (385, 576052), (770, 288026), (1540, 144013)]