90916900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{439}}^1$

素因数の和:581

約数の個数: 72

約数和(自身を含む): 210056000

約数和(自身を除く): 119139100

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 109, 190, 218, 380, 436, 439, 475, 545, 878, 950, 1090, 1756, 1900, 2071, 2180, 2195, 2725, 4142, 4390, 5450, 8284, 8341, 8780, 10355, 10900, 10975, 16682, 20710, 21950, 33364, 41420, 41705, 43900, 47851, 51775, 83410, 95702, 103550, 166820, 191404, 207100, 208525, 239255, 417050, 478510, 834100, 909169, 957020, 1196275, 1818338, 2392550, 3636676, 4545845, 4785100, 9091690, 18183380, 22729225, 45458450, 90916900]

約数ペア:

[(1, 90916900), (2, 45458450), (4, 22729225), (5, 18183380), (10, 9091690), (19, 4785100), (20, 4545845), (25, 3636676), (38, 2392550), (50, 1818338), (76, 1196275), (95, 957020), (100, 909169), (109, 834100), (190, 478510), (218, 417050), (380, 239255), (436, 208525), (439, 207100), (475, 191404), (545, 166820), (878, 103550), (950, 95702), (1090, 83410), (1756, 51775), (1900, 47851), (2071, 43900), (2180, 41705), (2195, 41420), (2725, 33364), (4142, 21950), (4390, 20710), (5450, 16682), (8284, 10975), (8341, 10900), (8780, 10355)]