51417220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{653}}^1$

素因数の和:820

約数の個数: 48

約数和(自身を含む): 112508928

約数和(自身を除く): 61091708

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 127, 155, 254, 310, 508, 620, 635, 653, 1270, 1306, 2540, 2612, 3265, 3937, 6530, 7874, 13060, 15748, 19685, 20243, 39370, 40486, 78740, 80972, 82931, 101215, 165862, 202430, 331724, 404860, 414655, 829310, 1658620, 2570861, 5141722, 10283444, 12854305, 25708610, 51417220]

約数ペア:

[(1, 51417220), (2, 25708610), (4, 12854305), (5, 10283444), (10, 5141722), (20, 2570861), (31, 1658620), (62, 829310), (124, 414655), (127, 404860), (155, 331724), (254, 202430), (310, 165862), (508, 101215), (620, 82931), (635, 80972), (653, 78740), (1270, 40486), (1306, 39370), (2540, 20243), (2612, 19685), (3265, 15748), (3937, 13060), (6530, 7874)]