51913220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:181

約数の個数: 72

約数和(自身を含む): 117277272

約数和(自身を除く): 65364052

約数列:

[1, 2, 4, 5, 10, 20, 31, 37, 62, 73, 74, 124, 146, 148, 155, 185, 292, 310, 365, 370, 620, 730, 740, 961, 1147, 1460, 1922, 2263, 2294, 2701, 3844, 4526, 4588, 4805, 5402, 5735, 9052, 9610, 10804, 11315, 11470, 13505, 19220, 22630, 22940, 27010, 35557, 45260, 54020, 70153, 71114, 83731, 140306, 142228, 167462, 177785, 280612, 334924, 350765, 355570, 418655, 701530, 711140, 837310, 1403060, 1674620, 2595661, 5191322, 10382644, 12978305, 25956610, 51913220]

約数ペア:

[(1, 51913220), (2, 25956610), (4, 12978305), (5, 10382644), (10, 5191322), (20, 2595661), (31, 1674620), (37, 1403060), (62, 837310), (73, 711140), (74, 701530), (124, 418655), (146, 355570), (148, 350765), (155, 334924), (185, 280612), (292, 177785), (310, 167462), (365, 142228), (370, 140306), (620, 83731), (730, 71114), (740, 70153), (961, 54020), (1147, 45260), (1460, 35557), (1922, 27010), (2263, 22940), (2294, 22630), (2701, 19220), (3844, 13505), (4526, 11470), (4588, 11315), (4805, 10804), (5402, 9610), (5735, 9052)]