221321000

素因数分解:

$2^3\times 5^3\times {\mathrm{43}}^1\times {\mathrm{5147}}^1$

素因数の和:5211

約数の個数: 64

約数和(自身を含む): 530038080

約数和(自身を除く): 308717080

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 125, 172, 200, 215, 250, 344, 430, 500, 860, 1000, 1075, 1720, 2150, 4300, 5147, 5375, 8600, 10294, 10750, 20588, 21500, 25735, 41176, 43000, 51470, 102940, 128675, 205880, 221321, 257350, 442642, 514700, 643375, 885284, 1029400, 1106605, 1286750, 1770568, 2213210, 2573500, 4426420, 5147000, 5533025, 8852840, 11066050, 22132100, 27665125, 44264200, 55330250, 110660500, 221321000]

約数ペア:

[(1, 221321000), (2, 110660500), (4, 55330250), (5, 44264200), (8, 27665125), (10, 22132100), (20, 11066050), (25, 8852840), (40, 5533025), (43, 5147000), (50, 4426420), (86, 2573500), (100, 2213210), (125, 1770568), (172, 1286750), (200, 1106605), (215, 1029400), (250, 885284), (344, 643375), (430, 514700), (500, 442642), (860, 257350), (1000, 221321), (1075, 205880), (1720, 128675), (2150, 102940), (4300, 51470), (5147, 43000), (5375, 41176), (8600, 25735), (10294, 21500), (10750, 20588)]