51147640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{227}}^1$

素因数の和:412

約数の個数: 64

約数和(自身を含む): 119180160

約数和(自身を除く): 68032520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 131, 172, 215, 227, 262, 344, 430, 454, 524, 655, 860, 908, 1048, 1135, 1310, 1720, 1816, 2270, 2620, 4540, 5240, 5633, 9080, 9761, 11266, 19522, 22532, 28165, 29737, 39044, 45064, 48805, 56330, 59474, 78088, 97610, 112660, 118948, 148685, 195220, 225320, 237896, 297370, 390440, 594740, 1189480, 1278691, 2557382, 5114764, 6393455, 10229528, 12786910, 25573820, 51147640]

約数ペア:

[(1, 51147640), (2, 25573820), (4, 12786910), (5, 10229528), (8, 6393455), (10, 5114764), (20, 2557382), (40, 1278691), (43, 1189480), (86, 594740), (131, 390440), (172, 297370), (215, 237896), (227, 225320), (262, 195220), (344, 148685), (430, 118948), (454, 112660), (524, 97610), (655, 78088), (860, 59474), (908, 56330), (1048, 48805), (1135, 45064), (1310, 39044), (1720, 29737), (1816, 28165), (2270, 22532), (2620, 19522), (4540, 11266), (5240, 9761), (5633, 9080)]